Finding the Fourth Proportional to 1,099.12, 1,516.72 and 601.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.12 : 1,516.72 = 601.76 : x
2. Step 2: Convert to fraction form
   1,099.12/1,516.72 = 601.76/x
3. Step 3: Cross multiply
   1,099.12x = 1,516.72 × 601.76
4. Step 4: Simplify right side
   1,099.12x = 912,701.43
5. Step 5: Solve for x
   x = 912,701.43/1,099.12
6. Step 6: Final answer
   x = 830.39