Finding the Fourth Proportional to 1,950.45, 2,691.50 and 1,111.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,950.45 : 2,691.50 = 1,111.25 : x
2. Step 2: Convert to fraction form
   1,950.45/2,691.50 = 1,111.25/x
3. Step 3: Cross multiply
   1,950.45x = 2,691.50 × 1,111.25
4. Step 4: Simplify right side
   1,950.45x = 2,990,910.36
5. Step 5: Solve for x
   x = 2,990,910.36/1,950.45
6. Step 6: Final answer
   x = 1,533.45