Finding the Fourth Proportional to 1,818.32, 2,508.37 and 1,320.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.32 : 2,508.37 = 1,320.17 : x
2. Step 2: Convert to fraction form
   1,818.32/2,508.37 = 1,320.17/x
3. Step 3: Cross multiply
   1,818.32x = 2,508.37 × 1,320.17
4. Step 4: Simplify right side
   1,818.32x = 3,311,458.98
5. Step 5: Solve for x
   x = 3,311,458.98/1,818.32
6. Step 6: Final answer
   x = 1,821.17