Finding the Fourth Proportional to 1,974.31, 2,726.78 and 1,310.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,974.31 : 2,726.78 = 1,310.01 : x
2. Step 2: Convert to fraction form
   1,974.31/2,726.78 = 1,310.01/x
3. Step 3: Cross multiply
   1,974.31x = 2,726.78 × 1,310.01
4. Step 4: Simplify right side
   1,974.31x = 3,572,109.07
5. Step 5: Solve for x
   x = 3,572,109.07/1,974.31
6. Step 6: Final answer
   x = 1,809.29