Finding the Fourth Proportional to 2,231,012.76, 3,078,817.26 and 1,212,417.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231,012.76 : 3,078,817.26 = 1,212,417.72 : x
2. Step 2: Convert to fraction form
   2,231,012.76/3,078,817.26 = 1,212,417.72/x
3. Step 3: Cross multiply
   2,231,012.76x = 3,078,817.26 × 1,212,417.72
4. Step 4: Simplify right side
   2,231,012.76x = 3,732,812,602,665.85
5. Step 5: Solve for x
   x = 3,732,812,602,665.85/2,231,012.76
6. Step 6: Final answer
   x = 1,673,147.13