Finding the Fourth Proportional to 1,329.79, 1,836.72 and 975.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,329.79 : 1,836.72 = 975.20 : x
2. Step 2: Convert to fraction form
   1,329.79/1,836.72 = 975.20/x
3. Step 3: Cross multiply
   1,329.79x = 1,836.72 × 975.20
4. Step 4: Simplify right side
   1,329.79x = 1,791,157.72
5. Step 5: Solve for x
   x = 1,791,157.72/1,329.79
6. Step 6: Final answer
   x = 1,346.95