Finding the Fourth Proportional to 1,437.28, 1,983.31 and 847.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.28 : 1,983.31 = 847.69 : x
2. Step 2: Convert to fraction form
   1,437.28/1,983.31 = 847.69/x
3. Step 3: Cross multiply
   1,437.28x = 1,983.31 × 847.69
4. Step 4: Simplify right side
   1,437.28x = 1,681,224.98
5. Step 5: Solve for x
   x = 1,681,224.98/1,437.28
6. Step 6: Final answer
   x = 1,169.73