Finding the Fourth Proportional to 2,261,669.89, 3,121,128.56 and 1,229,177.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261,669.89 : 3,121,128.56 = 1,229,177.67 : x
2. Step 2: Convert to fraction form
   2,261,669.89/3,121,128.56 = 1,229,177.67/x
3. Step 3: Cross multiply
   2,261,669.89x = 3,121,128.56 × 1,229,177.67
4. Step 4: Simplify right side
   2,261,669.89x = 3,836,421,525,005.37
5. Step 5: Solve for x
   x = 3,836,421,525,005.37/2,261,669.89
6. Step 6: Final answer
   x = 1,696,278.29