Finding the Fourth Proportional to 2,429.58, 3,646.06 and 1,390.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.58 : 3,646.06 = 1,390.42 : x
2. Step 2: Convert to fraction form
   2,429.58/3,646.06 = 1,390.42/x
3. Step 3: Cross multiply
   2,429.58x = 3,646.06 × 1,390.42
4. Step 4: Simplify right side
   2,429.58x = 5,069,554.75
5. Step 5: Solve for x
   x = 5,069,554.75/2,429.58
6. Step 6: Final answer
   x = 2,086.60