Finding the Fourth Proportional to 2,659.42, 3,989.56 and 904.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.42 : 3,989.56 = 904.53 : x
2. Step 2: Convert to fraction form
   2,659.42/3,989.56 = 904.53/x
3. Step 3: Cross multiply
   2,659.42x = 3,989.56 × 904.53
4. Step 4: Simplify right side
   2,659.42x = 3,608,676.71
5. Step 5: Solve for x
   x = 3,608,676.71/2,659.42
6. Step 6: Final answer
   x = 1,356.94