Finding the Fourth Proportional to 2,213,997.21, 3,321,083.30 and 616,699.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213,997.21 : 3,321,083.30 = 616,699.89 : x
2. Step 2: Convert to fraction form
   2,213,997.21/3,321,083.30 = 616,699.89/x
3. Step 3: Cross multiply
   2,213,997.21x = 3,321,083.30 × 616,699.89
4. Step 4: Simplify right side
   2,213,997.21x = 2,048,111,702,707.34
5. Step 5: Solve for x
   x = 2,048,111,702,707.34/2,213,997.21
6. Step 6: Final answer
   x = 925,074.20