Finding the Fourth Proportional to 2,978.05, 4,109.80 and 1,651.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.05 : 4,109.80 = 1,651.87 : x
2. Step 2: Convert to fraction form
   2,978.05/4,109.80 = 1,651.87/x
3. Step 3: Cross multiply
   2,978.05x = 4,109.80 × 1,651.87
4. Step 4: Simplify right side
   2,978.05x = 6,788,855.33
5. Step 5: Solve for x
   x = 6,788,855.33/2,978.05
6. Step 6: Final answer
   x = 2,279.63