Finding the Fourth Proportional to 1,122.06, 1,547.71 and 885.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,122.06 : 1,547.71 = 885.93 : x
2. Step 2: Convert to fraction form
   1,122.06/1,547.71 = 885.93/x
3. Step 3: Cross multiply
   1,122.06x = 1,547.71 × 885.93
4. Step 4: Simplify right side
   1,122.06x = 1,371,162.72
5. Step 5: Solve for x
   x = 1,371,162.72/1,122.06
6. Step 6: Final answer
   x = 1,222.00