Finding the Fourth Proportional to 1,967.51, 2,715.17 and 1,181.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,967.51 : 2,715.17 = 1,181.57 : x
2. Step 2: Convert to fraction form
   1,967.51/2,715.17 = 1,181.57/x
3. Step 3: Cross multiply
   1,967.51x = 2,715.17 × 1,181.57
4. Step 4: Simplify right side
   1,967.51x = 3,208,143.93
5. Step 5: Solve for x
   x = 3,208,143.93/1,967.51
6. Step 6: Final answer
   x = 1,630.56