Finding the Fourth Proportional to 2,470.38, 3,706.53 and 931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,470.38 : 3,706.53 = 931.50 : x
2. Step 2: Convert to fraction form
   2,470.38/3,706.53 = 931.50/x
3. Step 3: Cross multiply
   2,470.38x = 3,706.53 × 931.50
4. Step 4: Simplify right side
   2,470.38x = 3,452,632.70
5. Step 5: Solve for x
   x = 3,452,632.70/2,470.38
6. Step 6: Final answer
   x = 1,397.61