Finding the Fourth Proportional to 3,870.23, 5,345.34 and 2,549.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.23 : 5,345.34 = 2,549.84 : x
2. Step 2: Convert to fraction form
   3,870.23/5,345.34 = 2,549.84/x
3. Step 3: Cross multiply
   3,870.23x = 5,345.34 × 2,549.84
4. Step 4: Simplify right side
   3,870.23x = 13,629,761.75
5. Step 5: Solve for x
   x = 13,629,761.75/3,870.23
6. Step 6: Final answer
   x = 3,521.69