Finding the Fourth Proportional to 1,650.96, 2,278.39 and 904.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.96 : 2,278.39 = 904.99 : x
2. Step 2: Convert to fraction form
   1,650.96/2,278.39 = 904.99/x
3. Step 3: Cross multiply
   1,650.96x = 2,278.39 × 904.99
4. Step 4: Simplify right side
   1,650.96x = 2,061,904.25
5. Step 5: Solve for x
   x = 2,061,904.25/1,650.96
6. Step 6: Final answer
   x = 1,248.91