Finding the Fourth Proportional to 2,071.69, 2,858.93 and 1,140.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.69 : 2,858.93 = 1,140.19 : x
2. Step 2: Convert to fraction form
   2,071.69/2,858.93 = 1,140.19/x
3. Step 3: Cross multiply
   2,071.69x = 2,858.93 × 1,140.19
4. Step 4: Simplify right side
   2,071.69x = 3,259,714.82
5. Step 5: Solve for x
   x = 3,259,714.82/2,071.69
6. Step 6: Final answer
   x = 1,573.46