Finding the Fourth Proportional to 3,679.34, 5,077.98 and 2,421.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.34 : 5,077.98 = 2,421.50 : x
2. Step 2: Convert to fraction form
   3,679.34/5,077.98 = 2,421.50/x
3. Step 3: Cross multiply
   3,679.34x = 5,077.98 × 2,421.50
4. Step 4: Simplify right side
   3,679.34x = 12,296,303.18
5. Step 5: Solve for x
   x = 12,296,303.18/3,679.34
6. Step 6: Final answer
   x = 3,341.99