Finding the Fourth Proportional to 1,619,291.99, 2,429,778.61 and 660,451.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619,291.99 : 2,429,778.61 = 660,451.05 : x
2. Step 2: Convert to fraction form
   1,619,291.99/2,429,778.61 = 660,451.05/x
3. Step 3: Cross multiply
   1,619,291.99x = 2,429,778.61 × 660,451.05
4. Step 4: Simplify right side
   1,619,291.99x = 1,604,749,835,067.60
5. Step 5: Solve for x
   x = 1,604,749,835,067.60/1,619,291.99
6. Step 6: Final answer
   x = 991,019.43