Finding the Fourth Proportional to 2,320.74, 3,181.86 and 2,279.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.74 : 3,181.86 = 2,279.16 : x
2. Step 2: Convert to fraction form
   2,320.74/3,181.86 = 2,279.16/x
3. Step 3: Cross multiply
   2,320.74x = 3,181.86 × 2,279.16
4. Step 4: Simplify right side
   2,320.74x = 7,251,968.04
5. Step 5: Solve for x
   x = 7,251,968.04/2,320.74
6. Step 6: Final answer
   x = 3,124.85