Finding the Fourth Proportional to 1,253,667.75, 1,730,061.50 and 717,123.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,667.75 : 1,730,061.50 = 717,123.75 : x
2. Step 2: Convert to fraction form
   1,253,667.75/1,730,061.50 = 717,123.75/x
3. Step 3: Cross multiply
   1,253,667.75x = 1,730,061.50 × 717,123.75
4. Step 4: Simplify right side
   1,253,667.75x = 1,240,668,187,025.01
5. Step 5: Solve for x
   x = 1,240,668,187,025.01/1,253,667.75
6. Step 6: Final answer
   x = 989,630.78