Finding the Fourth Proportional to 1,650.76, 2,278.10 and 904.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.76 : 2,278.10 = 904.77 : x
2. Step 2: Convert to fraction form
   1,650.76/2,278.10 = 904.77/x
3. Step 3: Cross multiply
   1,650.76x = 2,278.10 × 904.77
4. Step 4: Simplify right side
   1,650.76x = 2,061,146.86
5. Step 5: Solve for x
   x = 2,061,146.86/1,650.76
6. Step 6: Final answer
   x = 1,248.61