Finding the Fourth Proportional to 1,347.20, 1,858.86 and 757.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.20 : 1,858.86 = 757.52 : x
2. Step 2: Convert to fraction form
   1,347.20/1,858.86 = 757.52/x
3. Step 3: Cross multiply
   1,347.20x = 1,858.86 × 757.52
4. Step 4: Simplify right side
   1,347.20x = 1,408,123.63
5. Step 5: Solve for x
   x = 1,408,123.63/1,347.20
6. Step 6: Final answer
   x = 1,045.22