Finding the Fourth Proportional to 1,354.40, 1,868.96 and 764.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.40 : 1,868.96 = 764.99 : x
2. Step 2: Convert to fraction form
   1,354.40/1,868.96 = 764.99/x
3. Step 3: Cross multiply
   1,354.40x = 1,868.96 × 764.99
4. Step 4: Simplify right side
   1,354.40x = 1,429,735.71
5. Step 5: Solve for x
   x = 1,429,735.71/1,354.40
6. Step 6: Final answer
   x = 1,055.62