Finding the Fourth Proportional to 1,099.10, 1,516.72 and 627.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.10 : 1,516.72 = 627.02 : x
2. Step 2: Convert to fraction form
   1,099.10/1,516.72 = 627.02/x
3. Step 3: Cross multiply
   1,099.10x = 1,516.72 × 627.02
4. Step 4: Simplify right side
   1,099.10x = 951,013.77
5. Step 5: Solve for x
   x = 951,013.77/1,099.10
6. Step 6: Final answer
   x = 865.27