Finding the Fourth Proportional to 2,549.88, 3,518.72 and 1,430.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.88 : 3,518.72 = 1,430.80 : x
2. Step 2: Convert to fraction form
   2,549.88/3,518.72 = 1,430.80/x
3. Step 3: Cross multiply
   2,549.88x = 3,518.72 × 1,430.80
4. Step 4: Simplify right side
   2,549.88x = 5,034,584.58
5. Step 5: Solve for x
   x = 5,034,584.58/2,549.88
6. Step 6: Final answer
   x = 1,974.44