Finding the Fourth Proportional to 1,437.27, 1,983.20 and 913.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.27 : 1,983.20 = 913.07 : x
2. Step 2: Convert to fraction form
   1,437.27/1,983.20 = 913.07/x
3. Step 3: Cross multiply
   1,437.27x = 1,983.20 × 913.07
4. Step 4: Simplify right side
   1,437.27x = 1,810,785.94
5. Step 5: Solve for x
   x = 1,810,785.94/1,437.27
6. Step 6: Final answer
   x = 1,259.88