Finding the Fourth Proportional to 2,200.23, 3,300.63 and 738.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.23 : 3,300.63 = 738.90 : x
2. Step 2: Convert to fraction form
   2,200.23/3,300.63 = 738.90/x
3. Step 3: Cross multiply
   2,200.23x = 3,300.63 × 738.90
4. Step 4: Simplify right side
   2,200.23x = 2,438,835.51
5. Step 5: Solve for x
   x = 2,438,835.51/2,200.23
6. Step 6: Final answer
   x = 1,108.45