Finding the Fourth Proportional to 1,445.96, 1,994.90 and 948.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.96 : 1,994.90 = 948.87 : x
2. Step 2: Convert to fraction form
   1,445.96/1,994.90 = 948.87/x
3. Step 3: Cross multiply
   1,445.96x = 1,994.90 × 948.87
4. Step 4: Simplify right side
   1,445.96x = 1,892,896.02
5. Step 5: Solve for x
   x = 1,892,896.02/1,445.96
6. Step 6: Final answer
   x = 1,309.09