Finding the Fourth Proportional to 1,162.98, 1,603.74 and 764.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.98 : 1,603.74 = 764.48 : x
2. Step 2: Convert to fraction form
   1,162.98/1,603.74 = 764.48/x
3. Step 3: Cross multiply
   1,162.98x = 1,603.74 × 764.48
4. Step 4: Simplify right side
   1,162.98x = 1,226,032.37
5. Step 5: Solve for x
   x = 1,226,032.37/1,162.98
6. Step 6: Final answer
   x = 1,054.21