Finding the Fourth Proportional to 1,901.12, 2,623.41 and 1,061.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,901.12 : 2,623.41 = 1,061.78 : x
2. Step 2: Convert to fraction form
   1,901.12/2,623.41 = 1,061.78/x
3. Step 3: Cross multiply
   1,901.12x = 2,623.41 × 1,061.78
4. Step 4: Simplify right side
   1,901.12x = 2,785,471.15
5. Step 5: Solve for x
   x = 2,785,471.15/1,901.12
6. Step 6: Final answer
   x = 1,465.18