Finding the Fourth Proportional to 1,445.98, 1,995.98 and 948.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.98 : 1,995.98 = 948.78 : x
2. Step 2: Convert to fraction form
   1,445.98/1,995.98 = 948.78/x
3. Step 3: Cross multiply
   1,445.98x = 1,995.98 × 948.78
4. Step 4: Simplify right side
   1,445.98x = 1,893,749.37
5. Step 5: Solve for x
   x = 1,893,749.37/1,445.98
6. Step 6: Final answer
   x = 1,309.66