Finding the Fourth Proportional to 2,961.90, 4,438.98 and 1,111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,961.90 : 4,438.98 = 1,111.32 : x
2. Step 2: Convert to fraction form
   2,961.90/4,438.98 = 1,111.32/x
3. Step 3: Cross multiply
   2,961.90x = 4,438.98 × 1,111.32
4. Step 4: Simplify right side
   2,961.90x = 4,933,127.25
5. Step 5: Solve for x
   x = 4,933,127.25/2,961.90
6. Step 6: Final answer
   x = 1,665.53