Finding the Fourth Proportional to 3,426.77, 5,140.51 and 1,087.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,426.77 : 5,140.51 = 1,087.10 : x
2. Step 2: Convert to fraction form
   3,426.77/5,140.51 = 1,087.10/x
3. Step 3: Cross multiply
   3,426.77x = 5,140.51 × 1,087.10
4. Step 4: Simplify right side
   3,426.77x = 5,588,248.42
5. Step 5: Solve for x
   x = 5,588,248.42/3,426.77
6. Step 6: Final answer
   x = 1,630.76