Finding the Fourth Proportional to 1,437.48, 1,983.71 and 816.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.48 : 1,983.71 = 816.48 : x
2. Step 2: Convert to fraction form
   1,437.48/1,983.71 = 816.48/x
3. Step 3: Cross multiply
   1,437.48x = 1,983.71 × 816.48
4. Step 4: Simplify right side
   1,437.48x = 1,619,661.58
5. Step 5: Solve for x
   x = 1,619,661.58/1,437.48
6. Step 6: Final answer
   x = 1,126.74