Finding the Fourth Proportional to 2,144,238.72, 2,958,840 and 1,238,801.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144,238.72 : 2,958,840 = 1,238,801.28 : x
2. Step 2: Convert to fraction form
   2,144,238.72/2,958,840 = 1,238,801.28/x
3. Step 3: Cross multiply
   2,144,238.72x = 2,958,840 × 1,238,801.28
4. Step 4: Simplify right side
   2,144,238.72x = 3,665,414,779,315.20
5. Step 5: Solve for x
   x = 3,665,414,779,315.20/2,144,238.72
6. Step 6: Final answer
   x = 1,709,424.77