Finding the Fourth Proportional to 1,650.88, 2,278.20 and 904.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.88 : 2,278.20 = 904.83 : x
2. Step 2: Convert to fraction form
   1,650.88/2,278.20 = 904.83/x
3. Step 3: Cross multiply
   1,650.88x = 2,278.20 × 904.83
4. Step 4: Simplify right side
   1,650.88x = 2,061,378.56
5. Step 5: Solve for x
   x = 2,061,378.56/1,650.88
6. Step 6: Final answer
   x = 1,248.65