Finding the Fourth Proportional to 2,152.83, 2,963.61 and 1,931.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.83 : 2,963.61 = 1,931.70 : x
2. Step 2: Convert to fraction form
   2,152.83/2,963.61 = 1,931.70/x
3. Step 3: Cross multiply
   2,152.83x = 2,963.61 × 1,931.70
4. Step 4: Simplify right side
   2,152.83x = 5,724,805.31
5. Step 5: Solve for x
   x = 5,724,805.31/2,152.83
6. Step 6: Final answer
   x = 2,659.20