Finding the Fourth Proportional to 2,151.30, 2,968.86 and 1,207.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.30 : 2,968.86 = 1,207.08 : x
2. Step 2: Convert to fraction form
   2,151.30/2,968.86 = 1,207.08/x
3. Step 3: Cross multiply
   2,151.30x = 2,968.86 × 1,207.08
4. Step 4: Simplify right side
   2,151.30x = 3,583,651.53
5. Step 5: Solve for x
   x = 3,583,651.53/2,151.30
6. Step 6: Final answer
   x = 1,665.81