Finding the Fourth Proportional to 2,221.34, 3,069.50 and 1,902.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.34 : 3,069.50 = 1,902.25 : x
2. Step 2: Convert to fraction form
   2,221.34/3,069.50 = 1,902.25/x
3. Step 3: Cross multiply
   2,221.34x = 3,069.50 × 1,902.25
4. Step 4: Simplify right side
   2,221.34x = 5,838,946.32
5. Step 5: Solve for x
   x = 5,838,946.32/2,221.34
6. Step 6: Final answer
   x = 2,628.58