Finding the Fourth Proportional to 1,901.31, 2,623.22 and 1,061.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,901.31 : 2,623.22 = 1,061.90 : x
2. Step 2: Convert to fraction form
   1,901.31/2,623.22 = 1,061.90/x
3. Step 3: Cross multiply
   1,901.31x = 2,623.22 × 1,061.90
4. Step 4: Simplify right side
   1,901.31x = 2,785,592.71
5. Step 5: Solve for x
   x = 2,785,592.71/1,901.31
6. Step 6: Final answer
   x = 1,465.09