Finding the Fourth Proportional to 1,863.34, 2,571.62 and 1,191.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863.34 : 2,571.62 = 1,191.77 : x
2. Step 2: Convert to fraction form
   1,863.34/2,571.62 = 1,191.77/x
3. Step 3: Cross multiply
   1,863.34x = 2,571.62 × 1,191.77
4. Step 4: Simplify right side
   1,863.34x = 3,064,779.57
5. Step 5: Solve for x
   x = 3,064,779.57/1,863.34
6. Step 6: Final answer
   x = 1,644.78