Finding the Fourth Proportional to 2,320.55, 3,479.00 and 1,209.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.55 : 3,479.00 = 1,209.47 : x
2. Step 2: Convert to fraction form
   2,320.55/3,479.00 = 1,209.47/x
3. Step 3: Cross multiply
   2,320.55x = 3,479.00 × 1,209.47
4. Step 4: Simplify right side
   2,320.55x = 4,207,722.69
5. Step 5: Solve for x
   x = 4,207,722.69/2,320.55
6. Step 6: Final answer
   x = 1,813.25