Finding the Fourth Proportional to 2,109,636.39, 2,911,238.22 and 1,238,457.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109,636.39 : 2,911,238.22 = 1,238,457.09 : x
2. Step 2: Convert to fraction form
   2,109,636.39/2,911,238.22 = 1,238,457.09/x
3. Step 3: Cross multiply
   2,109,636.39x = 2,911,238.22 × 1,238,457.09
4. Step 4: Simplify right side
   2,109,636.39x = 3,605,443,614,237.98
5. Step 5: Solve for x
   x = 3,605,443,614,237.98/2,109,636.39
6. Step 6: Final answer
   x = 1,709,035.56