Finding the Fourth Proportional to 1,050.87, 1,574.56 and 742.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.87 : 1,574.56 = 742.09 : x
2. Step 2: Convert to fraction form
   1,050.87/1,574.56 = 742.09/x
3. Step 3: Cross multiply
   1,050.87x = 1,574.56 × 742.09
4. Step 4: Simplify right side
   1,050.87x = 1,168,465.23
5. Step 5: Solve for x
   x = 1,168,465.23/1,050.87
6. Step 6: Final answer
   x = 1,111.90