Finding the Fourth Proportional to 2,526.91, 3,485.16 and 1,643

Step by Step Solution

1. Step 1: Write the proportion equation
   2,526.91 : 3,485.16 = 1,643 : x
2. Step 2: Convert to fraction form
   2,526.91/3,485.16 = 1,643/x
3. Step 3: Cross multiply
   2,526.91x = 3,485.16 × 1,643
4. Step 4: Simplify right side
   2,526.91x = 5,726,117.88
5. Step 5: Solve for x
   x = 5,726,117.88/2,526.91
6. Step 6: Final answer
   x = 2,266.06