Finding the Fourth Proportional to 1,520.18, 2,099.34 and 996.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.18 : 2,099.34 = 996.50 : x
2. Step 2: Convert to fraction form
   1,520.18/2,099.34 = 996.50/x
3. Step 3: Cross multiply
   1,520.18x = 2,099.34 × 996.50
4. Step 4: Simplify right side
   1,520.18x = 2,091,992.31
5. Step 5: Solve for x
   x = 2,091,992.31/1,520.18
6. Step 6: Final answer
   x = 1,376.15