Finding the Fourth Proportional to 2,308.34, 3,178.16 and 2,013.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.34 : 3,178.16 = 2,013.50 : x
2. Step 2: Convert to fraction form
   2,308.34/3,178.16 = 2,013.50/x
3. Step 3: Cross multiply
   2,308.34x = 3,178.16 × 2,013.50
4. Step 4: Simplify right side
   2,308.34x = 6,399,199.20
5. Step 5: Solve for x
   x = 6,399,199.20/2,308.34
6. Step 6: Final answer
   x = 2,772.21