Finding the Fourth Proportional to 2,253,597.21, 3,109,974.95 and 1,221,104.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253,597.21 : 3,109,974.95 = 1,221,104.72 : x
2. Step 2: Convert to fraction form
   2,253,597.21/3,109,974.95 = 1,221,104.72/x
3. Step 3: Cross multiply
   2,253,597.21x = 3,109,974.95 × 1,221,104.72
4. Step 4: Simplify right side
   2,253,597.21x = 3,797,605,090,526.76
5. Step 5: Solve for x
   x = 3,797,605,090,526.76/2,253,597.21
6. Step 6: Final answer
   x = 1,685,130.37