Finding the Fourth Proportional to 2,071.80, 2,858.98 and 1,127.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.80 : 2,858.98 = 1,127.57 : x
2. Step 2: Convert to fraction form
   2,071.80/2,858.98 = 1,127.57/x
3. Step 3: Cross multiply
   2,071.80x = 2,858.98 × 1,127.57
4. Step 4: Simplify right side
   2,071.80x = 3,223,701.16
5. Step 5: Solve for x
   x = 3,223,701.16/2,071.80
6. Step 6: Final answer
   x = 1,555.99