Finding the Fourth Proportional to 1,119.32, 1,667.72 and 1,056.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,119.32 : 1,667.72 = 1,056.44 : x
2. Step 2: Convert to fraction form
   1,119.32/1,667.72 = 1,056.44/x
3. Step 3: Cross multiply
   1,119.32x = 1,667.72 × 1,056.44
4. Step 4: Simplify right side
   1,119.32x = 1,761,844.59
5. Step 5: Solve for x
   x = 1,761,844.59/1,119.32
6. Step 6: Final answer
   x = 1,574.04