Finding the Fourth Proportional to 1,437.17, 1,983.46 and 807.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.17 : 1,983.46 = 807.72 : x
2. Step 2: Convert to fraction form
   1,437.17/1,983.46 = 807.72/x
3. Step 3: Cross multiply
   1,437.17x = 1,983.46 × 807.72
4. Step 4: Simplify right side
   1,437.17x = 1,602,085.80
5. Step 5: Solve for x
   x = 1,602,085.80/1,437.17
6. Step 6: Final answer
   x = 1,114.75