Finding the Fourth Proportional to 1,638,510, 2,458,179.72 and 456,558

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,510 : 2,458,179.72 = 456,558 : x
2. Step 2: Convert to fraction form
   1,638,510/2,458,179.72 = 456,558/x
3. Step 3: Cross multiply
   1,638,510x = 2,458,179.72 × 456,558
4. Step 4: Simplify right side
   1,638,510x = 1,122,301,616,603.76
5. Step 5: Solve for x
   x = 1,122,301,616,603.76/1,638,510
6. Step 6: Final answer
   x = 684,952.56