Finding the Fourth Proportional to 1,769.74, 2,664.89 and 1,310.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,769.74 : 2,664.89 = 1,310.77 : x
2. Step 2: Convert to fraction form
   1,769.74/2,664.89 = 1,310.77/x
3. Step 3: Cross multiply
   1,769.74x = 2,664.89 × 1,310.77
4. Step 4: Simplify right side
   1,769.74x = 3,493,064.47
5. Step 5: Solve for x
   x = 3,493,064.47/1,769.74
6. Step 6: Final answer
   x = 1,973.78