Finding the Fourth Proportional to 1,550,688.71, 2,139,636.78 and 905,984.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550,688.71 : 2,139,636.78 = 905,984.33 : x
2. Step 2: Convert to fraction form
   1,550,688.71/2,139,636.78 = 905,984.33/x
3. Step 3: Cross multiply
   1,550,688.71x = 2,139,636.78 × 905,984.33
4. Step 4: Simplify right side
   1,550,688.71x = 1,938,477,383,873.47
5. Step 5: Solve for x
   x = 1,938,477,383,873.47/1,550,688.71
6. Step 6: Final answer
   x = 1,250,075.13