Finding the Fourth Proportional to 2,429.78, 3,354.42 and 1,485.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.78 : 3,354.42 = 1,485.80 : x
2. Step 2: Convert to fraction form
   2,429.78/3,354.42 = 1,485.80/x
3. Step 3: Cross multiply
   2,429.78x = 3,354.42 × 1,485.80
4. Step 4: Simplify right side
   2,429.78x = 4,983,980.46
5. Step 5: Solve for x
   x = 4,983,980.46/2,429.78
6. Step 6: Final answer
   x = 2,051.21