Finding the Fourth Proportional to 2,053.56, 2,832.86 and 1,390.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,053.56 : 2,832.86 = 1,390.18 : x
2. Step 2: Convert to fraction form
   2,053.56/2,832.86 = 1,390.18/x
3. Step 3: Cross multiply
   2,053.56x = 2,832.86 × 1,390.18
4. Step 4: Simplify right side
   2,053.56x = 3,938,185.31
5. Step 5: Solve for x
   x = 3,938,185.31/2,053.56
6. Step 6: Final answer
   x = 1,917.74