Finding the Fourth Proportional to 1,041.68, 1,437.72 and 648.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,041.68 : 1,437.72 = 648.56 : x
2. Step 2: Convert to fraction form
   1,041.68/1,437.72 = 648.56/x
3. Step 3: Cross multiply
   1,041.68x = 1,437.72 × 648.56
4. Step 4: Simplify right side
   1,041.68x = 932,447.68
5. Step 5: Solve for x
   x = 932,447.68/1,041.68
6. Step 6: Final answer
   x = 895.14