Finding the Fourth Proportional to 1,753.18, 2,629.38 and 712.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,753.18 : 2,629.38 = 712.91 : x
2. Step 2: Convert to fraction form
   1,753.18/2,629.38 = 712.91/x
3. Step 3: Cross multiply
   1,753.18x = 2,629.38 × 712.91
4. Step 4: Simplify right side
   1,753.18x = 1,874,498.15
5. Step 5: Solve for x
   x = 1,874,498.15/1,753.18
6. Step 6: Final answer
   x = 1,069.20