Finding the Fourth Proportional to 1,948.31, 2,687.78 and 1,162.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.31 : 2,687.78 = 1,162.07 : x
2. Step 2: Convert to fraction form
   1,948.31/2,687.78 = 1,162.07/x
3. Step 3: Cross multiply
   1,948.31x = 2,687.78 × 1,162.07
4. Step 4: Simplify right side
   1,948.31x = 3,123,388.50
5. Step 5: Solve for x
   x = 3,123,388.50/1,948.31
6. Step 6: Final answer
   x = 1,603.13