Finding the Fourth Proportional to 1,131,606.33, 1,561,585.59 and 622,308.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,606.33 : 1,561,585.59 = 622,308.72 : x
2. Step 2: Convert to fraction form
   1,131,606.33/1,561,585.59 = 622,308.72/x
3. Step 3: Cross multiply
   1,131,606.33x = 1,561,585.59 × 622,308.72
4. Step 4: Simplify right side
   1,131,606.33x = 971,788,329,683.35
5. Step 5: Solve for x
   x = 971,788,329,683.35/1,131,606.33
6. Step 6: Final answer
   x = 858,768.91