Finding the Fourth Proportional to 2,071.56, 2,858.76 and 1,140.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.56 : 2,858.76 = 1,140.06 : x
2. Step 2: Convert to fraction form
   2,071.56/2,858.76 = 1,140.06/x
3. Step 3: Cross multiply
   2,071.56x = 2,858.76 × 1,140.06
4. Step 4: Simplify right side
   2,071.56x = 3,259,157.93
5. Step 5: Solve for x
   x = 3,259,157.93/2,071.56
6. Step 6: Final answer
   x = 1,573.29