Finding the Fourth Proportional to 2,870.37, 4,305.42 and 922.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.37 : 4,305.42 = 922.46 : x
2. Step 2: Convert to fraction form
   2,870.37/4,305.42 = 922.46/x
3. Step 3: Cross multiply
   2,870.37x = 4,305.42 × 922.46
4. Step 4: Simplify right side
   2,870.37x = 3,971,556.21
5. Step 5: Solve for x
   x = 3,971,556.21/2,870.37
6. Step 6: Final answer
   x = 1,383.64