Finding the Fourth Proportional to 1,550,637.78, 2,139,566.50 and 905,933.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550,637.78 : 2,139,566.50 = 905,933.46 : x
2. Step 2: Convert to fraction form
   1,550,637.78/2,139,566.50 = 905,933.46/x
3. Step 3: Cross multiply
   1,550,637.78x = 2,139,566.50 × 905,933.46
4. Step 4: Simplify right side
   1,550,637.78x = 1,938,304,891,400.88
5. Step 5: Solve for x
   x = 1,938,304,891,400.88/1,550,637.78
6. Step 6: Final answer
   x = 1,250,004.95