Finding the Fourth Proportional to 2,154,680.59, 2,973,468.22 and 1,187,789.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,680.59 : 2,973,468.22 = 1,187,789.67 : x
2. Step 2: Convert to fraction form
   2,154,680.59/2,973,468.22 = 1,187,789.67/x
3. Step 3: Cross multiply
   2,154,680.59x = 2,973,468.22 × 1,187,789.67
4. Step 4: Simplify right side
   2,154,680.59x = 3,531,854,814,983.00
5. Step 5: Solve for x
   x = 3,531,854,814,983.00/2,154,680.59
6. Step 6: Final answer
   x = 1,639,154.70