Finding the Fourth Proportional to 2,071.53, 2,858.72 and 1,140.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.53 : 2,858.72 = 1,140.03 : x
2. Step 2: Convert to fraction form
   2,071.53/2,858.72 = 1,140.03/x
3. Step 3: Cross multiply
   2,071.53x = 2,858.72 × 1,140.03
4. Step 4: Simplify right side
   2,071.53x = 3,259,028.71
5. Step 5: Solve for x
   x = 3,259,028.71/2,071.53
6. Step 6: Final answer
   x = 1,573.25