Finding the Fourth Proportional to 1,095.51, 1,642.28 and 401.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.51 : 1,642.28 = 401.69 : x
2. Step 2: Convert to fraction form
   1,095.51/1,642.28 = 401.69/x
3. Step 3: Cross multiply
   1,095.51x = 1,642.28 × 401.69
4. Step 4: Simplify right side
   1,095.51x = 659,677.23
5. Step 5: Solve for x
   x = 659,677.23/1,095.51
6. Step 6: Final answer
   x = 602.16