Finding the Fourth Proportional to 2,588,667.64, 3,883,118.10 and 990,816.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588,667.64 : 3,883,118.10 = 990,816.28 : x
2. Step 2: Convert to fraction form
   2,588,667.64/3,883,118.10 = 990,816.28/x
3. Step 3: Cross multiply
   2,588,667.64x = 3,883,118.10 × 990,816.28
4. Step 4: Simplify right side
   2,588,667.64x = 3,847,456,630,642.67
5. Step 5: Solve for x
   x = 3,847,456,630,642.67/2,588,667.64
6. Step 6: Final answer
   x = 1,486,269.06