Finding the Fourth Proportional to 2,870.79, 4,306.04 and 922.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.79 : 4,306.04 = 922.84 : x
2. Step 2: Convert to fraction form
   2,870.79/4,306.04 = 922.84/x
3. Step 3: Cross multiply
   2,870.79x = 4,306.04 × 922.84
4. Step 4: Simplify right side
   2,870.79x = 3,973,785.95
5. Step 5: Solve for x
   x = 3,973,785.95/2,870.79
6. Step 6: Final answer
   x = 1,384.21