Finding the Fourth Proportional to 1,590,734.78, 2,386,069.86 and 392,667.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,590,734.78 : 2,386,069.86 = 392,667.47 : x
2. Step 2: Convert to fraction form
   1,590,734.78/2,386,069.86 = 392,667.47/x
3. Step 3: Cross multiply
   1,590,734.78x = 2,386,069.86 × 392,667.47
4. Step 4: Simplify right side
   1,590,734.78x = 936,932,019,265.81
5. Step 5: Solve for x
   x = 936,932,019,265.81/1,590,734.78
6. Step 6: Final answer
   x = 588,993.23