Finding the Fourth Proportional to 1,375.39, 2,059.43 and 724.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.39 : 2,059.43 = 724.76 : x
2. Step 2: Convert to fraction form
   1,375.39/2,059.43 = 724.76/x
3. Step 3: Cross multiply
   1,375.39x = 2,059.43 × 724.76
4. Step 4: Simplify right side
   1,375.39x = 1,492,578.57
5. Step 5: Solve for x
   x = 1,492,578.57/1,375.39
6. Step 6: Final answer
   x = 1,085.21