Finding the Fourth Proportional to 1,641.78, 2,460.60 and 1,435.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.78 : 2,460.60 = 1,435.86 : x
2. Step 2: Convert to fraction form
   1,641.78/2,460.60 = 1,435.86/x
3. Step 3: Cross multiply
   1,641.78x = 2,460.60 × 1,435.86
4. Step 4: Simplify right side
   1,641.78x = 3,533,077.12
5. Step 5: Solve for x
   x = 3,533,077.12/1,641.78
6. Step 6: Final answer
   x = 2,151.98