Finding the Fourth Proportional to 2,549.40, 3,518.34 and 1,430.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.40 : 3,518.34 = 1,430.42 : x
2. Step 2: Convert to fraction form
   2,549.40/3,518.34 = 1,430.42/x
3. Step 3: Cross multiply
   2,549.40x = 3,518.34 × 1,430.42
4. Step 4: Simplify right side
   2,549.40x = 5,032,686.31
5. Step 5: Solve for x
   x = 5,032,686.31/2,549.40
6. Step 6: Final answer
   x = 1,974.07