Finding the Fourth Proportional to 1,798.62, 2,479.52 and 1,238.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,798.62 : 2,479.52 = 1,238.24 : x
2. Step 2: Convert to fraction form
   1,798.62/2,479.52 = 1,238.24/x
3. Step 3: Cross multiply
   1,798.62x = 2,479.52 × 1,238.24
4. Step 4: Simplify right side
   1,798.62x = 3,070,222.26
5. Step 5: Solve for x
   x = 3,070,222.26/1,798.62
6. Step 6: Final answer
   x = 1,706.99