Finding the Fourth Proportional to 1,018.89, 1,405.40 and 941.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.89 : 1,405.40 = 941.58 : x
2. Step 2: Convert to fraction form
   1,018.89/1,405.40 = 941.58/x
3. Step 3: Cross multiply
   1,018.89x = 1,405.40 × 941.58
4. Step 4: Simplify right side
   1,018.89x = 1,323,291.82
5. Step 5: Solve for x
   x = 1,323,291.82/1,018.89
6. Step 6: Final answer
   x = 1,298.76