Finding the Fourth Proportional to 1,920.84, 2,650.56 and 1,134.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.84 : 2,650.56 = 1,134.78 : x
2. Step 2: Convert to fraction form
   1,920.84/2,650.56 = 1,134.78/x
3. Step 3: Cross multiply
   1,920.84x = 2,650.56 × 1,134.78
4. Step 4: Simplify right side
   1,920.84x = 3,007,802.48
5. Step 5: Solve for x
   x = 3,007,802.48/1,920.84
6. Step 6: Final answer
   x = 1,565.88