Finding the Fourth Proportional to 2,157,433.88, 2,977,255.86 and 1,190,564.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157,433.88 : 2,977,255.86 = 1,190,564.15 : x
2. Step 2: Convert to fraction form
   2,157,433.88/2,977,255.86 = 1,190,564.15/x
3. Step 3: Cross multiply
   2,157,433.88x = 2,977,255.86 × 1,190,564.15
4. Step 4: Simplify right side
   2,157,433.88x = 3,544,614,092,293.42
5. Step 5: Solve for x
   x = 3,544,614,092,293.42/2,157,433.88
6. Step 6: Final answer
   x = 1,642,976.93