Finding the Fourth Proportional to 1,354.31, 1,868.95 and 764.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.31 : 1,868.95 = 764.84 : x
2. Step 2: Convert to fraction form
   1,354.31/1,868.95 = 764.84/x
3. Step 3: Cross multiply
   1,354.31x = 1,868.95 × 764.84
4. Step 4: Simplify right side
   1,354.31x = 1,429,447.72
5. Step 5: Solve for x
   x = 1,429,447.72/1,354.31
6. Step 6: Final answer
   x = 1,055.48