Finding the Fourth Proportional to 1,068.66, 1,475.21 and 719.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.66 : 1,475.21 = 719.55 : x
2. Step 2: Convert to fraction form
   1,068.66/1,475.21 = 719.55/x
3. Step 3: Cross multiply
   1,068.66x = 1,475.21 × 719.55
4. Step 4: Simplify right side
   1,068.66x = 1,061,483.76
5. Step 5: Solve for x
   x = 1,061,483.76/1,068.66
6. Step 6: Final answer
   x = 993.28