Finding the Fourth Proportional to 2,860,021.72, 4,290,028.74 and 730,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,860,021.72 : 4,290,028.74 = 730,105.72 : x
2. Step 2: Convert to fraction form
   2,860,021.72/4,290,028.74 = 730,105.72/x
3. Step 3: Cross multiply
   2,860,021.72x = 4,290,028.74 × 730,105.72
4. Step 4: Simplify right side
   2,860,021.72x = 3,132,174,522,038.39
5. Step 5: Solve for x
   x = 3,132,174,522,038.39/2,860,021.72
6. Step 6: Final answer
   x = 1,095,157.60