Finding the Fourth Proportional to 1,335,061.47, 2,002,647.48 and 388,432.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335,061.47 : 2,002,647.48 = 388,432.19 : x
2. Step 2: Convert to fraction form
   1,335,061.47/2,002,647.48 = 388,432.19/x
3. Step 3: Cross multiply
   1,335,061.47x = 2,002,647.48 × 388,432.19
4. Step 4: Simplify right side
   1,335,061.47x = 777,892,746,454.38
5. Step 5: Solve for x
   x = 777,892,746,454.38/1,335,061.47
6. Step 6: Final answer
   x = 582,664.37