Finding the Fourth Proportional to 1,880.82, 2,815.56 and 1,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,880.82 : 2,815.56 = 1,012.50 : x
2. Step 2: Convert to fraction form
   1,880.82/2,815.56 = 1,012.50/x
3. Step 3: Cross multiply
   1,880.82x = 2,815.56 × 1,012.50
4. Step 4: Simplify right side
   1,880.82x = 2,850,754.50
5. Step 5: Solve for x
   x = 2,850,754.50/1,880.82
6. Step 6: Final answer
   x = 1,515.70