Finding the Fourth Proportional to 880,453.98, 1,215,056.52 and 493,285.72

Step by Step Solution

1. Step 1: Write the proportion equation
   880,453.98 : 1,215,056.52 = 493,285.72 : x
2. Step 2: Convert to fraction form
   880,453.98/1,215,056.52 = 493,285.72/x
3. Step 3: Cross multiply
   880,453.98x = 1,215,056.52 × 493,285.72
4. Step 4: Simplify right side
   880,453.98x = 599,370,030,308.89
5. Step 5: Solve for x
   x = 599,370,030,308.89/880,453.98
6. Step 6: Final answer
   x = 680,751.12