Finding the Fourth Proportional to 2,978.06, 4,109.09 and 1,798.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.06 : 4,109.09 = 1,798.91 : x
2. Step 2: Convert to fraction form
   2,978.06/4,109.09 = 1,798.91/x
3. Step 3: Cross multiply
   2,978.06x = 4,109.09 × 1,798.91
4. Step 4: Simplify right side
   2,978.06x = 7,391,853.55
5. Step 5: Solve for x
   x = 7,391,853.55/2,978.06
6. Step 6: Final answer
   x = 2,482.10