Finding the Fourth Proportional to 1,100.32, 1,648.32 and 521.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.32 : 1,648.32 = 521.44 : x
2. Step 2: Convert to fraction form
   1,100.32/1,648.32 = 521.44/x
3. Step 3: Cross multiply
   1,100.32x = 1,648.32 × 521.44
4. Step 4: Simplify right side
   1,100.32x = 859,499.98
5. Step 5: Solve for x
   x = 859,499.98/1,100.32
6. Step 6: Final answer
   x = 781.14