Finding the Fourth Proportional to 1,567.06, 2,159.78 and 1,386.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,567.06 : 2,159.78 = 1,386.02 : x
2. Step 2: Convert to fraction form
   1,567.06/2,159.78 = 1,386.02/x
3. Step 3: Cross multiply
   1,567.06x = 2,159.78 × 1,386.02
4. Step 4: Simplify right side
   1,567.06x = 2,993,498.28
5. Step 5: Solve for x
   x = 2,993,498.28/1,567.06
6. Step 6: Final answer
   x = 1,910.26