Finding the Fourth Proportional to 1,648.14, 2,274.78 and 1,118.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.14 : 2,274.78 = 1,118.10 : x
2. Step 2: Convert to fraction form
   1,648.14/2,274.78 = 1,118.10/x
3. Step 3: Cross multiply
   1,648.14x = 2,274.78 × 1,118.10
4. Step 4: Simplify right side
   1,648.14x = 2,543,431.52
5. Step 5: Solve for x
   x = 2,543,431.52/1,648.14
6. Step 6: Final answer
   x = 1,543.21