Finding the Fourth Proportional to 1,706.15, 2,562.72 and 1,121.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,706.15 : 2,562.72 = 1,121.98 : x
2. Step 2: Convert to fraction form
   1,706.15/2,562.72 = 1,121.98/x
3. Step 3: Cross multiply
   1,706.15x = 2,562.72 × 1,121.98
4. Step 4: Simplify right side
   1,706.15x = 2,875,318.59
5. Step 5: Solve for x
   x = 2,875,318.59/1,706.15
6. Step 6: Final answer
   x = 1,685.27