Finding the Fourth Proportional to 2,892.32, 4,337.69 and 812.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.32 : 4,337.69 = 812.19 : x
2. Step 2: Convert to fraction form
   2,892.32/4,337.69 = 812.19/x
3. Step 3: Cross multiply
   2,892.32x = 4,337.69 × 812.19
4. Step 4: Simplify right side
   2,892.32x = 3,523,024.38
5. Step 5: Solve for x
   x = 3,523,024.38/2,892.32
6. Step 6: Final answer
   x = 1,218.06