Finding the Fourth Proportional to 1,157.83, 1,597.89 and 764.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,157.83 : 1,597.89 = 764.17 : x
2. Step 2: Convert to fraction form
   1,157.83/1,597.89 = 764.17/x
3. Step 3: Cross multiply
   1,157.83x = 1,597.89 × 764.17
4. Step 4: Simplify right side
   1,157.83x = 1,221,059.60
5. Step 5: Solve for x
   x = 1,221,059.60/1,157.83
6. Step 6: Final answer
   x = 1,054.61