Finding the Fourth Proportional to 2,588,666.89, 3,883,116.98 and 990,815.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588,666.89 : 3,883,116.98 = 990,815.53 : x
2. Step 2: Convert to fraction form
   2,588,666.89/3,883,116.98 = 990,815.53/x
3. Step 3: Cross multiply
   2,588,666.89x = 3,883,116.98 × 990,815.53
4. Step 4: Simplify right side
   2,588,666.89x = 3,847,452,603,636.62
5. Step 5: Solve for x
   x = 3,847,452,603,636.62/2,588,666.89
6. Step 6: Final answer
   x = 1,486,267.94