Finding the Fourth Proportional to 1,556.52, 2,334.15 and 1,012.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.52 : 2,334.15 = 1,012.20 : x
2. Step 2: Convert to fraction form
   1,556.52/2,334.15 = 1,012.20/x
3. Step 3: Cross multiply
   1,556.52x = 2,334.15 × 1,012.20
4. Step 4: Simplify right side
   1,556.52x = 2,362,626.63
5. Step 5: Solve for x
   x = 2,362,626.63/1,556.52
6. Step 6: Final answer
   x = 1,517.89