Finding the Fourth Proportional to 1,765,189.32, 2,435,766.33 and 990,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,765,189.32 : 2,435,766.33 = 990,642.50 : x
2. Step 2: Convert to fraction form
   1,765,189.32/2,435,766.33 = 990,642.50/x
3. Step 3: Cross multiply
   1,765,189.32x = 2,435,766.33 × 990,642.50
4. Step 4: Simplify right side
   1,765,189.32x = 2,412,973,629,434.98
5. Step 5: Solve for x
   x = 2,412,973,629,434.98/1,765,189.32
6. Step 6: Final answer
   x = 1,366,977.25