Finding the Fourth Proportional to 2,261,688.90, 3,121,154.82 and 1,229,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261,688.90 : 3,121,154.82 = 1,229,196.72 : x
2. Step 2: Convert to fraction form
   2,261,688.90/3,121,154.82 = 1,229,196.72/x
3. Step 3: Cross multiply
   2,261,688.90x = 3,121,154.82 × 1,229,196.72
4. Step 4: Simplify right side
   2,261,688.90x = 3,836,513,267,356.19
5. Step 5: Solve for x
   x = 3,836,513,267,356.19/2,261,688.90
6. Step 6: Final answer
   x = 1,696,304.59