Finding the Fourth Proportional to 1,354.34, 1,868.99 and 764.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.34 : 1,868.99 = 764.87 : x
2. Step 2: Convert to fraction form
   1,354.34/1,868.99 = 764.87/x
3. Step 3: Cross multiply
   1,354.34x = 1,868.99 × 764.87
4. Step 4: Simplify right side
   1,354.34x = 1,429,530.56
5. Step 5: Solve for x
   x = 1,429,530.56/1,354.34
6. Step 6: Final answer
   x = 1,055.52