Finding the Fourth Proportional to 1,743.45, 2,613.24 and 688.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.45 : 2,613.24 = 688.98 : x
2. Step 2: Convert to fraction form
   1,743.45/2,613.24 = 688.98/x
3. Step 3: Cross multiply
   1,743.45x = 2,613.24 × 688.98
4. Step 4: Simplify right side
   1,743.45x = 1,800,470.10
5. Step 5: Solve for x
   x = 1,800,470.10/1,743.45
6. Step 6: Final answer
   x = 1,032.71