Finding the Fourth Proportional to 1,100.69, 1,515.42 and 1,026.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.69 : 1,515.42 = 1,026.17 : x
2. Step 2: Convert to fraction form
   1,100.69/1,515.42 = 1,026.17/x
3. Step 3: Cross multiply
   1,100.69x = 1,515.42 × 1,026.17
4. Step 4: Simplify right side
   1,100.69x = 1,555,070.96
5. Step 5: Solve for x
   x = 1,555,070.96/1,100.69
6. Step 6: Final answer
   x = 1,412.82