Finding the Fourth Proportional to 1,375.99, 2,064.29 and 726.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.99 : 2,064.29 = 726.57 : x
2. Step 2: Convert to fraction form
   1,375.99/2,064.29 = 726.57/x
3. Step 3: Cross multiply
   1,375.99x = 2,064.29 × 726.57
4. Step 4: Simplify right side
   1,375.99x = 1,499,847.55
5. Step 5: Solve for x
   x = 1,499,847.55/1,375.99
6. Step 6: Final answer
   x = 1,090.02