Finding the Fourth Proportional to 1,886.27, 2,827.79 and 715.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.27 : 2,827.79 = 715.61 : x
2. Step 2: Convert to fraction form
   1,886.27/2,827.79 = 715.61/x
3. Step 3: Cross multiply
   1,886.27x = 2,827.79 × 715.61
4. Step 4: Simplify right side
   1,886.27x = 2,023,600.98
5. Step 5: Solve for x
   x = 2,023,600.98/1,886.27
6. Step 6: Final answer
   x = 1,072.81