Finding the Fourth Proportional to 2,365.55, 3,549.13 and 905.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,365.55 : 3,549.13 = 905.12 : x
2. Step 2: Convert to fraction form
   2,365.55/3,549.13 = 905.12/x
3. Step 3: Cross multiply
   2,365.55x = 3,549.13 × 905.12
4. Step 4: Simplify right side
   2,365.55x = 3,212,388.55
5. Step 5: Solve for x
   x = 3,212,388.55/2,365.55
6. Step 6: Final answer
   x = 1,357.99