Finding the Fourth Proportional to 1,354.22, 1,868.88 and 764.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.22 : 1,868.88 = 764.72 : x
2. Step 2: Convert to fraction form
   1,354.22/1,868.88 = 764.72/x
3. Step 3: Cross multiply
   1,354.22x = 1,868.88 × 764.72
4. Step 4: Simplify right side
   1,354.22x = 1,429,169.91
5. Step 5: Solve for x
   x = 1,429,169.91/1,354.22
6. Step 6: Final answer
   x = 1,055.35