Finding the Fourth Proportional to 1,948.59, 2,689.40 and 1,151.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.59 : 2,689.40 = 1,151.88 : x
2. Step 2: Convert to fraction form
   1,948.59/2,689.40 = 1,151.88/x
3. Step 3: Cross multiply
   1,948.59x = 2,689.40 × 1,151.88
4. Step 4: Simplify right side
   1,948.59x = 3,097,860.31
5. Step 5: Solve for x
   x = 3,097,860.31/1,948.59
6. Step 6: Final answer
   x = 1,589.80