Finding the Fourth Proportional to 1,551.71, 2,141.40 and 843.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.71 : 2,141.40 = 843.59 : x
2. Step 2: Convert to fraction form
   1,551.71/2,141.40 = 843.59/x
3. Step 3: Cross multiply
   1,551.71x = 2,141.40 × 843.59
4. Step 4: Simplify right side
   1,551.71x = 1,806,468.49
5. Step 5: Solve for x
   x = 1,806,468.49/1,551.71
6. Step 6: Final answer
   x = 1,164.18