Finding the Fourth Proportional to 1,648.85, 2,275.61 and 940.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.85 : 2,275.61 = 940.82 : x
2. Step 2: Convert to fraction form
   1,648.85/2,275.61 = 940.82/x
3. Step 3: Cross multiply
   1,648.85x = 2,275.61 × 940.82
4. Step 4: Simplify right side
   1,648.85x = 2,140,923.32
5. Step 5: Solve for x
   x = 2,140,923.32/1,648.85
6. Step 6: Final answer
   x = 1,298.44