Finding the Fourth Proportional to 2,156.58, 2,971.34 and 1,801.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.58 : 2,971.34 = 1,801.18 : x
2. Step 2: Convert to fraction form
   2,156.58/2,971.34 = 1,801.18/x
3. Step 3: Cross multiply
   2,156.58x = 2,971.34 × 1,801.18
4. Step 4: Simplify right side
   2,156.58x = 5,351,918.18
5. Step 5: Solve for x
   x = 5,351,918.18/2,156.58
6. Step 6: Final answer
   x = 2,481.67