Finding the Fourth Proportional to 1,886, 2,825.34 and 1,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886 : 2,825.34 = 1,391.50 : x
2. Step 2: Convert to fraction form
   1,886/2,825.34 = 1,391.50/x
3. Step 3: Cross multiply
   1,886x = 2,825.34 × 1,391.50
4. Step 4: Simplify right side
   1,886x = 3,931,460.61
5. Step 5: Solve for x
   x = 3,931,460.61/1,886
6. Step 6: Final answer
   x = 2,084.55