Finding the Fourth Proportional to 1,710.14, 2,562.84 and 978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,710.14 : 2,562.84 = 978.18 : x
2. Step 2: Convert to fraction form
   1,710.14/2,562.84 = 978.18/x
3. Step 3: Cross multiply
   1,710.14x = 2,562.84 × 978.18
4. Step 4: Simplify right side
   1,710.14x = 2,506,918.83
5. Step 5: Solve for x
   x = 2,506,918.83/1,710.14
6. Step 6: Final answer
   x = 1,465.91