Finding the Fourth Proportional to 2,870.37, 4,306.05 and 923.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.37 : 4,306.05 = 923.04 : x
2. Step 2: Convert to fraction form
   2,870.37/4,306.05 = 923.04/x
3. Step 3: Cross multiply
   2,870.37x = 4,306.05 × 923.04
4. Step 4: Simplify right side
   2,870.37x = 3,974,656.39
5. Step 5: Solve for x
   x = 3,974,656.39/2,870.37
6. Step 6: Final answer
   x = 1,384.72