Finding the Fourth Proportional to 1,384.55, 2,077.43 and 726.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.55 : 2,077.43 = 726.26 : x
2. Step 2: Convert to fraction form
   1,384.55/2,077.43 = 726.26/x
3. Step 3: Cross multiply
   1,384.55x = 2,077.43 × 726.26
4. Step 4: Simplify right side
   1,384.55x = 1,508,755.87
5. Step 5: Solve for x
   x = 1,508,755.87/1,384.55
6. Step 6: Final answer
   x = 1,089.71