Finding the Fourth Proportional to 2,978.10, 4,109.60 and 1,651.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.10 : 4,109.60 = 1,651.76 : x
2. Step 2: Convert to fraction form
   2,978.10/4,109.60 = 1,651.76/x
3. Step 3: Cross multiply
   2,978.10x = 4,109.60 × 1,651.76
4. Step 4: Simplify right side
   2,978.10x = 6,788,072.90
5. Step 5: Solve for x
   x = 6,788,072.90/2,978.10
6. Step 6: Final answer
   x = 2,279.33