Finding the Fourth Proportional to 2,886.87, 4,328.54 and 1,131.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.87 : 4,328.54 = 1,131.54 : x
2. Step 2: Convert to fraction form
   2,886.87/4,328.54 = 1,131.54/x
3. Step 3: Cross multiply
   2,886.87x = 4,328.54 × 1,131.54
4. Step 4: Simplify right side
   2,886.87x = 4,897,910.49
5. Step 5: Solve for x
   x = 4,897,910.49/2,886.87
6. Step 6: Final answer
   x = 1,696.62