Finding the Fourth Proportional to 1,156,152.15, 1,595,492.37 and 639,941.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156,152.15 : 1,595,492.37 = 639,941.31 : x
2. Step 2: Convert to fraction form
   1,156,152.15/1,595,492.37 = 639,941.31/x
3. Step 3: Cross multiply
   1,156,152.15x = 1,595,492.37 × 639,941.31
4. Step 4: Simplify right side
   1,156,152.15x = 1,021,021,477,352.80
5. Step 5: Solve for x
   x = 1,021,021,477,352.80/1,156,152.15
6. Step 6: Final answer
   x = 883,120.34