Finding the Fourth Proportional to 1,445.15, 1,993.77 and 948.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.15 : 1,993.77 = 948.07 : x
2. Step 2: Convert to fraction form
   1,445.15/1,993.77 = 948.07/x
3. Step 3: Cross multiply
   1,445.15x = 1,993.77 × 948.07
4. Step 4: Simplify right side
   1,445.15x = 1,890,223.56
5. Step 5: Solve for x
   x = 1,890,223.56/1,445.15
6. Step 6: Final answer
   x = 1,307.98