Finding the Fourth Proportional to 1,437.49, 1,983.57 and 807.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.49 : 1,983.57 = 807.89 : x
2. Step 2: Convert to fraction form
   1,437.49/1,983.57 = 807.89/x
3. Step 3: Cross multiply
   1,437.49x = 1,983.57 × 807.89
4. Step 4: Simplify right side
   1,437.49x = 1,602,506.37
5. Step 5: Solve for x
   x = 1,602,506.37/1,437.49
6. Step 6: Final answer
   x = 1,114.79