Finding the Fourth Proportional to 1,947.86, 2,690.33 and 1,550.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.86 : 2,690.33 = 1,550.85 : x
2. Step 2: Convert to fraction form
   1,947.86/2,690.33 = 1,550.85/x
3. Step 3: Cross multiply
   1,947.86x = 2,690.33 × 1,550.85
4. Step 4: Simplify right side
   1,947.86x = 4,172,298.28
5. Step 5: Solve for x
   x = 4,172,298.28/1,947.86
6. Step 6: Final answer
   x = 2,141.99