Finding the Fourth Proportional to 1,575.55, 2,171.58 and 1,077.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.55 : 2,171.58 = 1,077.33 : x
2. Step 2: Convert to fraction form
   1,575.55/2,171.58 = 1,077.33/x
3. Step 3: Cross multiply
   1,575.55x = 2,171.58 × 1,077.33
4. Step 4: Simplify right side
   1,575.55x = 2,339,506.23
5. Step 5: Solve for x
   x = 2,339,506.23/1,575.55
6. Step 6: Final answer
   x = 1,484.88