Finding the Fourth Proportional to 1,321,410,964.37, 1,977,805,074.72 and 971,564,272.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,410,964.37 : 1,977,805,074.72 = 971,564,272.61 : x
2. Step 2: Convert to fraction form
   1,321,410,964.37/1,977,805,074.72 = 971,564,272.61/x
3. Step 3: Cross multiply
   1,321,410,964.37x = 1,977,805,074.72 × 971,564,272.61
4. Step 4: Simplify right side
   1,321,410,964.37x = 1,921,564,748,784,703,488
5. Step 5: Solve for x
   x = 1,921,564,748,784,703,488/1,321,410,964.37
6. Step 6: Final answer
   x = 1,454,176,483.01