Finding the Fourth Proportional to 1,648.71, 2,275.32 and 902.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.71 : 2,275.32 = 902.67 : x
2. Step 2: Convert to fraction form
   1,648.71/2,275.32 = 902.67/x
3. Step 3: Cross multiply
   1,648.71x = 2,275.32 × 902.67
4. Step 4: Simplify right side
   1,648.71x = 2,053,863.10
5. Step 5: Solve for x
   x = 2,053,863.10/1,648.71
6. Step 6: Final answer
   x = 1,245.74