Finding the Fourth Proportional to 2,588,667.89, 3,883,118.48 and 990,816.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588,667.89 : 3,883,118.48 = 990,816.53 : x
2. Step 2: Convert to fraction form
   2,588,667.89/3,883,118.48 = 990,816.53/x
3. Step 3: Cross multiply
   2,588,667.89x = 3,883,118.48 × 990,816.53
4. Step 4: Simplify right side
   2,588,667.89x = 3,847,457,977,932.47
5. Step 5: Solve for x
   x = 3,847,457,977,932.47/2,588,667.89
6. Step 6: Final answer
   x = 1,486,269.44