Finding the Fourth Proportional to 1,861.92, 2,806.52 and 1,706.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.92 : 2,806.52 = 1,706.06 : x
2. Step 2: Convert to fraction form
   1,861.92/2,806.52 = 1,706.06/x
3. Step 3: Cross multiply
   1,861.92x = 2,806.52 × 1,706.06
4. Step 4: Simplify right side
   1,861.92x = 4,788,090.00
5. Step 5: Solve for x
   x = 4,788,090.00/1,861.92
6. Step 6: Final answer
   x = 2,571.59