Finding the Fourth Proportional to 1,299,578.88, 1,949,498.52 and 446,538.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299,578.88 : 1,949,498.52 = 446,538.15 : x
2. Step 2: Convert to fraction form
   1,299,578.88/1,949,498.52 = 446,538.15/x
3. Step 3: Cross multiply
   1,299,578.88x = 1,949,498.52 × 446,538.15
4. Step 4: Simplify right side
   1,299,578.88x = 870,525,460,874.02
5. Step 5: Solve for x
   x = 870,525,460,874.02/1,299,578.88
6. Step 6: Final answer
   x = 669,851.96