Finding the Fourth Proportional to 1,648.95, 2,275.61 and 1,111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.95 : 2,275.61 = 1,111.32 : x
2. Step 2: Convert to fraction form
   1,648.95/2,275.61 = 1,111.32/x
3. Step 3: Cross multiply
   1,648.95x = 2,275.61 × 1,111.32
4. Step 4: Simplify right side
   1,648.95x = 2,528,930.91
5. Step 5: Solve for x
   x = 2,528,930.91/1,648.95
6. Step 6: Final answer
   x = 1,533.66