Finding the Fourth Proportional to 1,038,456, 1,557,684 and 290,502

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038,456 : 1,557,684 = 290,502 : x
2. Step 2: Convert to fraction form
   1,038,456/1,557,684 = 290,502/x
3. Step 3: Cross multiply
   1,038,456x = 1,557,684 × 290,502
4. Step 4: Simplify right side
   1,038,456x = 452,510,317,368
5. Step 5: Solve for x
   x = 452,510,317,368/1,038,456
6. Step 6: Final answer
   x = 435,753