Finding the Fourth Proportional to 1,648.41, 2,275.34 and 1,089.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.41 : 2,275.34 = 1,089.38 : x
2. Step 2: Convert to fraction form
   1,648.41/2,275.34 = 1,089.38/x
3. Step 3: Cross multiply
   1,648.41x = 2,275.34 × 1,089.38
4. Step 4: Simplify right side
   1,648.41x = 2,478,693.07
5. Step 5: Solve for x
   x = 2,478,693.07/1,648.41
6. Step 6: Final answer
   x = 1,503.69