Finding the Fourth Proportional to 1,095.30, 1,642.50 and 401.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.30 : 1,642.50 = 401.94 : x
2. Step 2: Convert to fraction form
   1,095.30/1,642.50 = 401.94/x
3. Step 3: Cross multiply
   1,095.30x = 1,642.50 × 401.94
4. Step 4: Simplify right side
   1,095.30x = 660,186.45
5. Step 5: Solve for x
   x = 660,186.45/1,095.30
6. Step 6: Final answer
   x = 602.74