Finding the Fourth Proportional to 1,114,321.92, 1,672,146.93 and 404,405.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114,321.92 : 1,672,146.93 = 404,405.31 : x
2. Step 2: Convert to fraction form
   1,114,321.92/1,672,146.93 = 404,405.31/x
3. Step 3: Cross multiply
   1,114,321.92x = 1,672,146.93 × 404,405.31
4. Step 4: Simplify right side
   1,114,321.92x = 676,225,097,592.20
5. Step 5: Solve for x
   x = 676,225,097,592.20/1,114,321.92
6. Step 6: Final answer
   x = 606,848.96