Finding the Fourth Proportional to 2,221.80, 3,065.34 and 1,436.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.80 : 3,065.34 = 1,436.52 : x
2. Step 2: Convert to fraction form
   2,221.80/3,065.34 = 1,436.52/x
3. Step 3: Cross multiply
   2,221.80x = 3,065.34 × 1,436.52
4. Step 4: Simplify right side
   2,221.80x = 4,403,422.22
5. Step 5: Solve for x
   x = 4,403,422.22/2,221.80
6. Step 6: Final answer
   x = 1,981.92