Finding the Fourth Proportional to 1,154,321.86, 1,592,933.60 and 645,028.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,154,321.86 : 1,592,933.60 = 645,028.42 : x
2. Step 2: Convert to fraction form
   1,154,321.86/1,592,933.60 = 645,028.42/x
3. Step 3: Cross multiply
   1,154,321.86x = 1,592,933.60 × 645,028.42
4. Step 4: Simplify right side
   1,154,321.86x = 1,027,487,443,172.91
5. Step 5: Solve for x
   x = 1,027,487,443,172.91/1,154,321.86
6. Step 6: Final answer
   x = 890,122.14