Finding the Fourth Proportional to 2,798.02, 4,196.77 and 1,238.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,798.02 : 4,196.77 = 1,238.05 : x
2. Step 2: Convert to fraction form
   2,798.02/4,196.77 = 1,238.05/x
3. Step 3: Cross multiply
   2,798.02x = 4,196.77 × 1,238.05
4. Step 4: Simplify right side
   2,798.02x = 5,195,811.10
5. Step 5: Solve for x
   x = 5,195,811.10/2,798.02
6. Step 6: Final answer
   x = 1,856.96