Finding the Fourth Proportional to 1,077.48, 1,485.50 and 1,043.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.48 : 1,485.50 = 1,043.46 : x
2. Step 2: Convert to fraction form
   1,077.48/1,485.50 = 1,043.46/x
3. Step 3: Cross multiply
   1,077.48x = 1,485.50 × 1,043.46
4. Step 4: Simplify right side
   1,077.48x = 1,550,059.83
5. Step 5: Solve for x
   x = 1,550,059.83/1,077.48
6. Step 6: Final answer
   x = 1,438.60