Finding the Fourth Proportional to 1,095.34, 1,634.53 and 978.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.34 : 1,634.53 = 978.53 : x
2. Step 2: Convert to fraction form
   1,095.34/1,634.53 = 978.53/x
3. Step 3: Cross multiply
   1,095.34x = 1,634.53 × 978.53
4. Step 4: Simplify right side
   1,095.34x = 1,599,436.64
5. Step 5: Solve for x
   x = 1,599,436.64/1,095.34
6. Step 6: Final answer
   x = 1,460.22