Finding the Fourth Proportional to 1,120,590.20, 1,546,487.55 and 637,200.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120,590.20 : 1,546,487.55 = 637,200.33 : x
2. Step 2: Convert to fraction form
   1,120,590.20/1,546,487.55 = 637,200.33/x
3. Step 3: Cross multiply
   1,120,590.20x = 1,546,487.55 × 637,200.33
4. Step 4: Simplify right side
   1,120,590.20x = 985,422,377,200.89
5. Step 5: Solve for x
   x = 985,422,377,200.89/1,120,590.20
6. Step 6: Final answer
   x = 879,378.01