Finding the Fourth Proportional to 2,978.23, 4,109.81 and 1,651.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.23 : 4,109.81 = 1,651.91 : x
2. Step 2: Convert to fraction form
   2,978.23/4,109.81 = 1,651.91/x
3. Step 3: Cross multiply
   2,978.23x = 4,109.81 × 1,651.91
4. Step 4: Simplify right side
   2,978.23x = 6,789,019.82
5. Step 5: Solve for x
   x = 6,789,019.82/2,978.23
6. Step 6: Final answer
   x = 2,279.55