Finding the Fourth Proportional to 1,392,238.72, 2,088,359.74 and 381,369.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,238.72 : 2,088,359.74 = 381,369.39 : x
2. Step 2: Convert to fraction form
   1,392,238.72/2,088,359.74 = 381,369.39/x
3. Step 3: Cross multiply
   1,392,238.72x = 2,088,359.74 × 381,369.39
4. Step 4: Simplify right side
   1,392,238.72x = 796,436,472,789.72
5. Step 5: Solve for x
   x = 796,436,472,789.72/1,392,238.72
6. Step 6: Final answer
   x = 572,054.53