Finding the Fourth Proportional to 2,240.02, 3,091.46 and 1,355.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.02 : 3,091.46 = 1,355.80 : x
2. Step 2: Convert to fraction form
   2,240.02/3,091.46 = 1,355.80/x
3. Step 3: Cross multiply
   2,240.02x = 3,091.46 × 1,355.80
4. Step 4: Simplify right side
   2,240.02x = 4,191,401.47
5. Step 5: Solve for x
   x = 4,191,401.47/2,240.02
6. Step 6: Final answer
   x = 1,871.14