Finding the Fourth Proportional to 2,886.80, 4,328.06 and 1,012.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.80 : 4,328.06 = 1,012.19 : x
2. Step 2: Convert to fraction form
   2,886.80/4,328.06 = 1,012.19/x
3. Step 3: Cross multiply
   2,886.80x = 4,328.06 × 1,012.19
4. Step 4: Simplify right side
   2,886.80x = 4,380,792.35
5. Step 5: Solve for x
   x = 4,380,792.35/2,886.80
6. Step 6: Final answer
   x = 1,517.53