Finding the Fourth Proportional to 1,137,815.51, 1,570,559.59 and 905,668.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137,815.51 : 1,570,559.59 = 905,668.27 : x
2. Step 2: Convert to fraction form
   1,137,815.51/1,570,559.59 = 905,668.27/x
3. Step 3: Cross multiply
   1,137,815.51x = 1,570,559.59 × 905,668.27
4. Step 4: Simplify right side
   1,137,815.51x = 1,422,405,992,847.29
5. Step 5: Solve for x
   x = 1,422,405,992,847.29/1,137,815.51
6. Step 6: Final answer
   x = 1,250,120.06