Finding the Fourth Proportional to 2,978.10, 4,111.02 and 1,798.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.10 : 4,111.02 = 1,798.88 : x
2. Step 2: Convert to fraction form
   2,978.10/4,111.02 = 1,798.88/x
3. Step 3: Cross multiply
   2,978.10x = 4,111.02 × 1,798.88
4. Step 4: Simplify right side
   2,978.10x = 7,395,211.10
5. Step 5: Solve for x
   x = 7,395,211.10/2,978.10
6. Step 6: Final answer
   x = 2,483.20