Finding the Fourth Proportional to 1,520.76, 2,095.78 and 1,100.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,520.76 : 2,095.78 = 1,100.40 : x
2. Step 2: Convert to fraction form
   1,520.76/2,095.78 = 1,100.40/x
3. Step 3: Cross multiply
   1,520.76x = 2,095.78 × 1,100.40
4. Step 4: Simplify right side
   1,520.76x = 2,306,196.31
5. Step 5: Solve for x
   x = 2,306,196.31/1,520.76
6. Step 6: Final answer
   x = 1,516.48