Finding the Fourth Proportional to 1,109,260.02, 1,664,073.98 and 389,414.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109,260.02 : 1,664,073.98 = 389,414.89 : x
2. Step 2: Convert to fraction form
   1,109,260.02/1,664,073.98 = 389,414.89/x
3. Step 3: Cross multiply
   1,109,260.02x = 1,664,073.98 × 389,414.89
4. Step 4: Simplify right side
   1,109,260.02x = 648,015,185,873.56
5. Step 5: Solve for x
   x = 648,015,185,873.56/1,109,260.02
6. Step 6: Final answer
   x = 584,186.91