Finding the Fourth Proportional to 2,961.88, 4,438.74 and 1,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,961.88 : 4,438.74 = 1,111.12 : x
2. Step 2: Convert to fraction form
   2,961.88/4,438.74 = 1,111.12/x
3. Step 3: Cross multiply
   2,961.88x = 4,438.74 × 1,111.12
4. Step 4: Simplify right side
   2,961.88x = 4,931,972.79
5. Step 5: Solve for x
   x = 4,931,972.79/2,961.88
6. Step 6: Final answer
   x = 1,665.15