Finding the Fourth Proportional to 2,485.55, 3,430.10 and 1,366.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.55 : 3,430.10 = 1,366.61 : x
2. Step 2: Convert to fraction form
   2,485.55/3,430.10 = 1,366.61/x
3. Step 3: Cross multiply
   2,485.55x = 3,430.10 × 1,366.61
4. Step 4: Simplify right side
   2,485.55x = 4,687,595.23
5. Step 5: Solve for x
   x = 4,687,595.23/2,485.55
6. Step 6: Final answer
   x = 1,885.94