Finding the Fourth Proportional to 1,068.59, 1,474.50 and 648.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.59 : 1,474.50 = 648.96 : x
2. Step 2: Convert to fraction form
   1,068.59/1,474.50 = 648.96/x
3. Step 3: Cross multiply
   1,068.59x = 1,474.50 × 648.96
4. Step 4: Simplify right side
   1,068.59x = 956,896.72
5. Step 5: Solve for x
   x = 956,896.72/1,068.59
6. Step 6: Final answer
   x = 895.47