Finding the Fourth Proportional to 2,990,063.98, 4,484,939.16 and 860,064.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990,063.98 : 4,484,939.16 = 860,064.46 : x
2. Step 2: Convert to fraction form
   2,990,063.98/4,484,939.16 = 860,064.46/x
3. Step 3: Cross multiply
   2,990,063.98x = 4,484,939.16 × 860,064.46
4. Step 4: Simplify right side
   2,990,063.98x = 3,857,336,776,778.25
5. Step 5: Solve for x
   x = 3,857,336,776,778.25/2,990,063.98
6. Step 6: Final answer
   x = 1,290,051.59