Finding the Fourth Proportional to 2,485.88, 3,430.52 and 1,366.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.88 : 3,430.52 = 1,366.89 : x
2. Step 2: Convert to fraction form
   2,485.88/3,430.52 = 1,366.89/x
3. Step 3: Cross multiply
   2,485.88x = 3,430.52 × 1,366.89
4. Step 4: Simplify right side
   2,485.88x = 4,689,130.83
5. Step 5: Solve for x
   x = 4,689,130.83/2,485.88
6. Step 6: Final answer
   x = 1,886.31