Finding the Fourth Proportional to 1,361.62, 1,877.89 and 1,163.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.62 : 1,877.89 = 1,163.86 : x
2. Step 2: Convert to fraction form
   1,361.62/1,877.89 = 1,163.86/x
3. Step 3: Cross multiply
   1,361.62x = 1,877.89 × 1,163.86
4. Step 4: Simplify right side
   1,361.62x = 2,185,601.06
5. Step 5: Solve for x
   x = 2,185,601.06/1,361.62
6. Step 6: Final answer
   x = 1,605.15