Finding the Fourth Proportional to 1,971.48, 2,719.86 and 1,185.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971.48 : 2,719.86 = 1,185.42 : x
2. Step 2: Convert to fraction form
   1,971.48/2,719.86 = 1,185.42/x
3. Step 3: Cross multiply
   1,971.48x = 2,719.86 × 1,185.42
4. Step 4: Simplify right side
   1,971.48x = 3,224,176.44
5. Step 5: Solve for x
   x = 3,224,176.44/1,971.48
6. Step 6: Final answer
   x = 1,635.41