Finding the Fourth Proportional to 1,112.43, 1,534.82 and 646.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.43 : 1,534.82 = 646.59 : x
2. Step 2: Convert to fraction form
   1,112.43/1,534.82 = 646.59/x
3. Step 3: Cross multiply
   1,112.43x = 1,534.82 × 646.59
4. Step 4: Simplify right side
   1,112.43x = 992,396.03
5. Step 5: Solve for x
   x = 992,396.03/1,112.43
6. Step 6: Final answer
   x = 892.10