Finding the Fourth Proportional to 1,840.56, 2,538.72 and 1,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,840.56 : 2,538.72 = 1,140.72 : x
2. Step 2: Convert to fraction form
   1,840.56/2,538.72 = 1,140.72/x
3. Step 3: Cross multiply
   1,840.56x = 2,538.72 × 1,140.72
4. Step 4: Simplify right side
   1,840.56x = 2,895,968.68
5. Step 5: Solve for x
   x = 2,895,968.68/1,840.56
6. Step 6: Final answer
   x = 1,573.42