Finding the Fourth Proportional to 1,353.76, 1,868.05 and 764.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.76 : 1,868.05 = 764.35 : x
2. Step 2: Convert to fraction form
   1,353.76/1,868.05 = 764.35/x
3. Step 3: Cross multiply
   1,353.76x = 1,868.05 × 764.35
4. Step 4: Simplify right side
   1,353.76x = 1,427,844.02
5. Step 5: Solve for x
   x = 1,427,844.02/1,353.76
6. Step 6: Final answer
   x = 1,054.72