Finding the Fourth Proportional to 2,632.43, 3,948.72 and 783.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.43 : 3,948.72 = 783.57 : x
2. Step 2: Convert to fraction form
   2,632.43/3,948.72 = 783.57/x
3. Step 3: Cross multiply
   2,632.43x = 3,948.72 × 783.57
4. Step 4: Simplify right side
   2,632.43x = 3,094,110.40
5. Step 5: Solve for x
   x = 3,094,110.40/2,632.43
6. Step 6: Final answer
   x = 1,175.38