Finding the Fourth Proportional to 2,166.50, 3,250.76 and 1,070.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.50 : 3,250.76 = 1,070.30 : x
2. Step 2: Convert to fraction form
   2,166.50/3,250.76 = 1,070.30/x
3. Step 3: Cross multiply
   2,166.50x = 3,250.76 × 1,070.30
4. Step 4: Simplify right side
   2,166.50x = 3,479,288.43
5. Step 5: Solve for x
   x = 3,479,288.43/2,166.50
6. Step 6: Final answer
   x = 1,605.95