Finding the Fourth Proportional to 2,130.59, 3,196.38 and 724.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.59 : 3,196.38 = 724.93 : x
2. Step 2: Convert to fraction form
   2,130.59/3,196.38 = 724.93/x
3. Step 3: Cross multiply
   2,130.59x = 3,196.38 × 724.93
4. Step 4: Simplify right side
   2,130.59x = 2,317,160.38
5. Step 5: Solve for x
   x = 2,317,160.38/2,130.59
6. Step 6: Final answer
   x = 1,087.57