Finding the Fourth Proportional to 2,438.72, 3,658.62 and 707.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,438.72 : 3,658.62 = 707.48 : x
2. Step 2: Convert to fraction form
   2,438.72/3,658.62 = 707.48/x
3. Step 3: Cross multiply
   2,438.72x = 3,658.62 × 707.48
4. Step 4: Simplify right side
   2,438.72x = 2,588,400.48
5. Step 5: Solve for x
   x = 2,588,400.48/2,438.72
6. Step 6: Final answer
   x = 1,061.38