Finding the Fourth Proportional to 2,569.86, 3,546.24 and 1,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,569.86 : 3,546.24 = 1,435.50 : x
2. Step 2: Convert to fraction form
   2,569.86/3,546.24 = 1,435.50/x
3. Step 3: Cross multiply
   2,569.86x = 3,546.24 × 1,435.50
4. Step 4: Simplify right side
   2,569.86x = 5,090,627.52
5. Step 5: Solve for x
   x = 5,090,627.52/2,569.86
6. Step 6: Final answer
   x = 1,980.90