Finding the Fourth Proportional to 1,650.35, 2,276.03 and 1,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.35 : 2,276.03 = 1,020.78 : x
2. Step 2: Convert to fraction form
   1,650.35/2,276.03 = 1,020.78/x
3. Step 3: Cross multiply
   1,650.35x = 2,276.03 × 1,020.78
4. Step 4: Simplify right side
   1,650.35x = 2,323,328.46
5. Step 5: Solve for x
   x = 2,323,328.46/1,650.35
6. Step 6: Final answer
   x = 1,407.78