Finding the Fourth Proportional to 1,445.65, 1,994.46 and 948.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.65 : 1,994.46 = 948.57 : x
2. Step 2: Convert to fraction form
   1,445.65/1,994.46 = 948.57/x
3. Step 3: Cross multiply
   1,445.65x = 1,994.46 × 948.57
4. Step 4: Simplify right side
   1,445.65x = 1,891,874.95
5. Step 5: Solve for x
   x = 1,891,874.95/1,445.65
6. Step 6: Final answer
   x = 1,308.67