Finding the Fourth Proportional to 1,962.75, 2,940.52 and 1,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.75 : 2,940.52 = 1,139.52 : x
2. Step 2: Convert to fraction form
   1,962.75/2,940.52 = 1,139.52/x
3. Step 3: Cross multiply
   1,962.75x = 2,940.52 × 1,139.52
4. Step 4: Simplify right side
   1,962.75x = 3,350,781.35
5. Step 5: Solve for x
   x = 3,350,781.35/1,962.75
6. Step 6: Final answer
   x = 1,707.19