Finding the Fourth Proportional to 2,071.50, 2,858.67 and 1,140

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.50 : 2,858.67 = 1,140 : x
2. Step 2: Convert to fraction form
   2,071.50/2,858.67 = 1,140/x
3. Step 3: Cross multiply
   2,071.50x = 2,858.67 × 1,140
4. Step 4: Simplify right side
   2,071.50x = 3,258,883.80
5. Step 5: Solve for x
   x = 3,258,883.80/2,071.50
6. Step 6: Final answer
   x = 1,573.20