Finding the Fourth Proportional to 1,308,443.98, 1,962,167.82 and 859,044.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308,443.98 : 1,962,167.82 = 859,044.64 : x
2. Step 2: Convert to fraction form
   1,308,443.98/1,962,167.82 = 859,044.64/x
3. Step 3: Cross multiply
   1,308,443.98x = 1,962,167.82 × 859,044.64
4. Step 4: Simplify right side
   1,308,443.98x = 1,685,589,748,551.49
5. Step 5: Solve for x
   x = 1,685,589,748,551.49/1,308,443.98
6. Step 6: Final answer
   x = 1,288,239.91