Finding the Fourth Proportional to 1,491.24, 2,056.06 and 1,225.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.24 : 2,056.06 = 1,225.38 : x
2. Step 2: Convert to fraction form
   1,491.24/2,056.06 = 1,225.38/x
3. Step 3: Cross multiply
   1,491.24x = 2,056.06 × 1,225.38
4. Step 4: Simplify right side
   1,491.24x = 2,519,454.80
5. Step 5: Solve for x
   x = 2,519,454.80/1,491.24
6. Step 6: Final answer
   x = 1,689.50