Finding the Fourth Proportional to 1,145,535.60, 1,580,795.52 and 636,270.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145,535.60 : 1,580,795.52 = 636,270.72 : x
2. Step 2: Convert to fraction form
   1,145,535.60/1,580,795.52 = 636,270.72/x
3. Step 3: Cross multiply
   1,145,535.60x = 1,580,795.52 × 636,270.72
4. Step 4: Simplify right side
   1,145,535.60x = 1,005,813,903,683.17
5. Step 5: Solve for x
   x = 1,005,813,903,683.17/1,145,535.60
6. Step 6: Final answer
   x = 878,029.37