Finding the Fourth Proportional to 2,726.05, 4,089.83 and 971.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.05 : 4,089.83 = 971.45 : x
2. Step 2: Convert to fraction form
   2,726.05/4,089.83 = 971.45/x
3. Step 3: Cross multiply
   2,726.05x = 4,089.83 × 971.45
4. Step 4: Simplify right side
   2,726.05x = 3,973,070.72
5. Step 5: Solve for x
   x = 3,973,070.72/2,726.05
6. Step 6: Final answer
   x = 1,457.45