Finding the Fourth Proportional to 1,901.21, 2,623.61 and 1,061.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,901.21 : 2,623.61 = 1,061.99 : x
2. Step 2: Convert to fraction form
   1,901.21/2,623.61 = 1,061.99/x
3. Step 3: Cross multiply
   1,901.21x = 2,623.61 × 1,061.99
4. Step 4: Simplify right side
   1,901.21x = 2,786,229.16
5. Step 5: Solve for x
   x = 2,786,229.16/1,901.21
6. Step 6: Final answer
   x = 1,465.50