Finding the Fourth Proportional to 1,410.78, 2,116.04 and 922.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.78 : 2,116.04 = 922.76 : x
2. Step 2: Convert to fraction form
   1,410.78/2,116.04 = 922.76/x
3. Step 3: Cross multiply
   1,410.78x = 2,116.04 × 922.76
4. Step 4: Simplify right side
   1,410.78x = 1,952,581.88
5. Step 5: Solve for x
   x = 1,952,581.88/1,410.78
6. Step 6: Final answer
   x = 1,384.04