Finding the Fourth Proportional to 919.32, 1,379.89 and 748.01

Step by Step Solution

1. Step 1: Write the proportion equation
   919.32 : 1,379.89 = 748.01 : x
2. Step 2: Convert to fraction form
   919.32/1,379.89 = 748.01/x
3. Step 3: Cross multiply
   919.32x = 1,379.89 × 748.01
4. Step 4: Simplify right side
   919.32x = 1,032,165.55
5. Step 5: Solve for x
   x = 1,032,165.55/919.32
6. Step 6: Final answer
   x = 1,122.75