Finding the Fourth Proportional to 2,405.91, 3,603.60 and 1,429.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.91 : 3,603.60 = 1,429.86 : x
2. Step 2: Convert to fraction form
   2,405.91/3,603.60 = 1,429.86/x
3. Step 3: Cross multiply
   2,405.91x = 3,603.60 × 1,429.86
4. Step 4: Simplify right side
   2,405.91x = 5,152,643.50
5. Step 5: Solve for x
   x = 5,152,643.50/2,405.91
6. Step 6: Final answer
   x = 2,141.66