Finding the Fourth Proportional to 2,774.55, 4,158.63 and 1,386.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,774.55 : 4,158.63 = 1,386.48 : x
2. Step 2: Convert to fraction form
   2,774.55/4,158.63 = 1,386.48/x
3. Step 3: Cross multiply
   2,774.55x = 4,158.63 × 1,386.48
4. Step 4: Simplify right side
   2,774.55x = 5,765,857.32
5. Step 5: Solve for x
   x = 5,765,857.32/2,774.55
6. Step 6: Final answer
   x = 2,078.12