Finding the Fourth Proportional to 2,485.98, 3,728.54 and 707.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.98 : 3,728.54 = 707.16 : x
2. Step 2: Convert to fraction form
   2,485.98/3,728.54 = 707.16/x
3. Step 3: Cross multiply
   2,485.98x = 3,728.54 × 707.16
4. Step 4: Simplify right side
   2,485.98x = 2,636,670.81
5. Step 5: Solve for x
   x = 2,636,670.81/2,485.98
6. Step 6: Final answer
   x = 1,060.62