Finding the Fourth Proportional to 1,551.82, 2,141.50 and 853.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.82 : 2,141.50 = 853.18 : x
2. Step 2: Convert to fraction form
   1,551.82/2,141.50 = 853.18/x
3. Step 3: Cross multiply
   1,551.82x = 2,141.50 × 853.18
4. Step 4: Simplify right side
   1,551.82x = 1,827,084.97
5. Step 5: Solve for x
   x = 1,827,084.97/1,551.82
6. Step 6: Final answer
   x = 1,177.38