Finding the Fourth Proportional to 2,457.57, 3,686.60 and 726.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.57 : 3,686.60 = 726.69 : x
2. Step 2: Convert to fraction form
   2,457.57/3,686.60 = 726.69/x
3. Step 3: Cross multiply
   2,457.57x = 3,686.60 × 726.69
4. Step 4: Simplify right side
   2,457.57x = 2,679,011.72
5. Step 5: Solve for x
   x = 2,679,011.72/2,457.57
6. Step 6: Final answer
   x = 1,090.11