Finding the Fourth Proportional to 2,291.73, 3,435.57 and 904.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.73 : 3,435.57 = 904.34 : x
2. Step 2: Convert to fraction form
   2,291.73/3,435.57 = 904.34/x
3. Step 3: Cross multiply
   2,291.73x = 3,435.57 × 904.34
4. Step 4: Simplify right side
   2,291.73x = 3,106,906.20
5. Step 5: Solve for x
   x = 3,106,906.20/2,291.73
6. Step 6: Final answer
   x = 1,355.70