Finding the Fourth Proportional to 2,221.98, 3,065.43 and 1,393.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.98 : 3,065.43 = 1,393.50 : x
2. Step 2: Convert to fraction form
   2,221.98/3,065.43 = 1,393.50/x
3. Step 3: Cross multiply
   2,221.98x = 3,065.43 × 1,393.50
4. Step 4: Simplify right side
   2,221.98x = 4,271,676.71
5. Step 5: Solve for x
   x = 4,271,676.71/2,221.98
6. Step 6: Final answer
   x = 1,922.46