Finding the Fourth Proportional to 1,550,342.43, 2,138,991.71 and 905,297.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550,342.43 : 2,138,991.71 = 905,297.31 : x
2. Step 2: Convert to fraction form
   1,550,342.43/2,138,991.71 = 905,297.31/x
3. Step 3: Cross multiply
   1,550,342.43x = 2,138,991.71 × 905,297.31
4. Step 4: Simplify right side
   1,550,342.43x = 1,936,423,436,648.81
5. Step 5: Solve for x
   x = 1,936,423,436,648.81/1,550,342.43
6. Step 6: Final answer
   x = 1,249,029.50