Finding the Fourth Proportional to 1,237,128.22, 1,855,982.85 and 384,155.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,237,128.22 : 1,855,982.85 = 384,155.83 : x
2. Step 2: Convert to fraction form
   1,237,128.22/1,855,982.85 = 384,155.83/x
3. Step 3: Cross multiply
   1,237,128.22x = 1,855,982.85 × 384,155.83
4. Step 4: Simplify right side
   1,237,128.22x = 712,986,621,006.82
5. Step 5: Solve for x
   x = 712,986,621,006.82/1,237,128.22
6. Step 6: Final answer
   x = 576,323.95