Finding the Fourth Proportional to 1,406.50, 1,942.05 and 1,113.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.50 : 1,942.05 = 1,113.28 : x
2. Step 2: Convert to fraction form
   1,406.50/1,942.05 = 1,113.28/x
3. Step 3: Cross multiply
   1,406.50x = 1,942.05 × 1,113.28
4. Step 4: Simplify right side
   1,406.50x = 2,162,045.42
5. Step 5: Solve for x
   x = 2,162,045.42/1,406.50
6. Step 6: Final answer
   x = 1,537.18