Finding the Fourth Proportional to 1,068.72, 1,602.71 and 656.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.72 : 1,602.71 = 656.63 : x
2. Step 2: Convert to fraction form
   1,068.72/1,602.71 = 656.63/x
3. Step 3: Cross multiply
   1,068.72x = 1,602.71 × 656.63
4. Step 4: Simplify right side
   1,068.72x = 1,052,376.17
5. Step 5: Solve for x
   x = 1,052,376.17/1,068.72
6. Step 6: Final answer
   x = 984.71