Finding the Fourth Proportional to 1,557,906.60, 2,336,641.20 and 493,056.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,557,906.60 : 2,336,641.20 = 493,056.30 : x
2. Step 2: Convert to fraction form
   1,557,906.60/2,336,641.20 = 493,056.30/x
3. Step 3: Cross multiply
   1,557,906.60x = 2,336,641.20 × 493,056.30
4. Step 4: Simplify right side
   1,557,906.60x = 1,152,095,664,499.56
5. Step 5: Solve for x
   x = 1,152,095,664,499.56/1,557,906.60
6. Step 6: Final answer
   x = 739,515.23