Finding the Fourth Proportional to 1,817.76, 2,508.30 and 1,061.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.76 : 2,508.30 = 1,061.28 : x
2. Step 2: Convert to fraction form
   1,817.76/2,508.30 = 1,061.28/x
3. Step 3: Cross multiply
   1,817.76x = 2,508.30 × 1,061.28
4. Step 4: Simplify right side
   1,817.76x = 2,662,008.62
5. Step 5: Solve for x
   x = 2,662,008.62/1,817.76
6. Step 6: Final answer
   x = 1,464.44