Finding the Fourth Proportional to 2,221.99, 3,330.59 and 1,672.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.99 : 3,330.59 = 1,672.47 : x
2. Step 2: Convert to fraction form
   2,221.99/3,330.59 = 1,672.47/x
3. Step 3: Cross multiply
   2,221.99x = 3,330.59 × 1,672.47
4. Step 4: Simplify right side
   2,221.99x = 5,570,303.49
5. Step 5: Solve for x
   x = 5,570,303.49/2,221.99
6. Step 6: Final answer
   x = 2,506.90