Finding the Fourth Proportional to 1,354.29, 1,868.91 and 764.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.29 : 1,868.91 = 764.81 : x
2. Step 2: Convert to fraction form
   1,354.29/1,868.91 = 764.81/x
3. Step 3: Cross multiply
   1,354.29x = 1,868.91 × 764.81
4. Step 4: Simplify right side
   1,354.29x = 1,429,355.85
5. Step 5: Solve for x
   x = 1,429,355.85/1,354.29
6. Step 6: Final answer
   x = 1,055.43