Finding the Fourth Proportional to 2,567.08, 3,542.57 and 1,388.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,567.08 : 3,542.57 = 1,388.15 : x
2. Step 2: Convert to fraction form
   2,567.08/3,542.57 = 1,388.15/x
3. Step 3: Cross multiply
   2,567.08x = 3,542.57 × 1,388.15
4. Step 4: Simplify right side
   2,567.08x = 4,917,611.60
5. Step 5: Solve for x
   x = 4,917,611.60/2,567.08
6. Step 6: Final answer
   x = 1,915.65