Finding the Fourth Proportional to 3,005.64, 4,505.31 and 1,056.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,005.64 : 4,505.31 = 1,056.42 : x
2. Step 2: Convert to fraction form
   3,005.64/4,505.31 = 1,056.42/x
3. Step 3: Cross multiply
   3,005.64x = 4,505.31 × 1,056.42
4. Step 4: Simplify right side
   3,005.64x = 4,759,499.59
5. Step 5: Solve for x
   x = 4,759,499.59/3,005.64
6. Step 6: Final answer
   x = 1,583.52