Finding the Fourth Proportional to 2,736.55, 3,776.19 and 1,557.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,736.55 : 3,776.19 = 1,557.31 : x
2. Step 2: Convert to fraction form
   2,736.55/3,776.19 = 1,557.31/x
3. Step 3: Cross multiply
   2,736.55x = 3,776.19 × 1,557.31
4. Step 4: Simplify right side
   2,736.55x = 5,880,698.45
5. Step 5: Solve for x
   x = 5,880,698.45/2,736.55
6. Step 6: Final answer
   x = 2,148.95