Finding the Fourth Proportional to 1,445.52, 1,995.60 and 1,097.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.52 : 1,995.60 = 1,097.76 : x
2. Step 2: Convert to fraction form
   1,445.52/1,995.60 = 1,097.76/x
3. Step 3: Cross multiply
   1,445.52x = 1,995.60 × 1,097.76
4. Step 4: Simplify right side
   1,445.52x = 2,190,689.86
5. Step 5: Solve for x
   x = 2,190,689.86/1,445.52
6. Step 6: Final answer
   x = 1,515.50