Finding the Fourth Proportional to 1,068.72, 1,474.62 and 626.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.72 : 1,474.62 = 626.76 : x
2. Step 2: Convert to fraction form
   1,068.72/1,474.62 = 626.76/x
3. Step 3: Cross multiply
   1,068.72x = 1,474.62 × 626.76
4. Step 4: Simplify right side
   1,068.72x = 924,232.83
5. Step 5: Solve for x
   x = 924,232.83/1,068.72
6. Step 6: Final answer
   x = 864.80