Finding the Fourth Proportional to 2,573.64, 3,862.89 and 1,187.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.64 : 3,862.89 = 1,187.73 : x
2. Step 2: Convert to fraction form
   2,573.64/3,862.89 = 1,187.73/x
3. Step 3: Cross multiply
   2,573.64x = 3,862.89 × 1,187.73
4. Step 4: Simplify right side
   2,573.64x = 4,588,070.34
5. Step 5: Solve for x
   x = 4,588,070.34/2,573.64
6. Step 6: Final answer
   x = 1,782.72