Finding the Fourth Proportional to 1,527.98, 2,291.03 and 1,039.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,527.98 : 2,291.03 = 1,039.55 : x
2. Step 2: Convert to fraction form
   1,527.98/2,291.03 = 1,039.55/x
3. Step 3: Cross multiply
   1,527.98x = 2,291.03 × 1,039.55
4. Step 4: Simplify right side
   1,527.98x = 2,381,635.04
5. Step 5: Solve for x
   x = 2,381,635.04/1,527.98
6. Step 6: Final answer
   x = 1,558.68