Finding the Fourth Proportional to 1,789.62, 2,688.06 and 1,174.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.62 : 2,688.06 = 1,174.20 : x
2. Step 2: Convert to fraction form
   1,789.62/2,688.06 = 1,174.20/x
3. Step 3: Cross multiply
   1,789.62x = 2,688.06 × 1,174.20
4. Step 4: Simplify right side
   1,789.62x = 3,156,320.05
5. Step 5: Solve for x
   x = 3,156,320.05/1,789.62
6. Step 6: Final answer
   x = 1,763.68