Finding the Fourth Proportional to 1,481.60, 2,045.72 and 1,128.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,481.60 : 2,045.72 = 1,128.18 : x
2. Step 2: Convert to fraction form
   1,481.60/2,045.72 = 1,128.18/x
3. Step 3: Cross multiply
   1,481.60x = 2,045.72 × 1,128.18
4. Step 4: Simplify right side
   1,481.60x = 2,307,940.39
5. Step 5: Solve for x
   x = 2,307,940.39/1,481.60
6. Step 6: Final answer
   x = 1,557.74