Finding the Fourth Proportional to 2,184.99, 3,279.83 and 1,211.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,184.99 : 3,279.83 = 1,211.91 : x
2. Step 2: Convert to fraction form
   2,184.99/3,279.83 = 1,211.91/x
3. Step 3: Cross multiply
   2,184.99x = 3,279.83 × 1,211.91
4. Step 4: Simplify right side
   2,184.99x = 3,974,852.72
5. Step 5: Solve for x
   x = 3,974,852.72/2,184.99
6. Step 6: Final answer
   x = 1,819.16