Finding the Fourth Proportional to 2,084.28, 2,876.40 and 1,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.28 : 2,876.40 = 1,152.72 : x
2. Step 2: Convert to fraction form
   2,084.28/2,876.40 = 1,152.72/x
3. Step 3: Cross multiply
   2,084.28x = 2,876.40 × 1,152.72
4. Step 4: Simplify right side
   2,084.28x = 3,315,683.81
5. Step 5: Solve for x
   x = 3,315,683.81/2,084.28
6. Step 6: Final answer
   x = 1,590.81