Finding the Fourth Proportional to 2,293.55, 3,440.30 and 1,200.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,293.55 : 3,440.30 = 1,200.05 : x
2. Step 2: Convert to fraction form
   2,293.55/3,440.30 = 1,200.05/x
3. Step 3: Cross multiply
   2,293.55x = 3,440.30 × 1,200.05
4. Step 4: Simplify right side
   2,293.55x = 4,128,532.02
5. Step 5: Solve for x
   x = 4,128,532.02/2,293.55
6. Step 6: Final answer
   x = 1,800.06