Finding the Fourth Proportional to 1,679.32, 2,518.68 and 754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.32 : 2,518.68 = 754.72 : x
2. Step 2: Convert to fraction form
   1,679.32/2,518.68 = 754.72/x
3. Step 3: Cross multiply
   1,679.32x = 2,518.68 × 754.72
4. Step 4: Simplify right side
   1,679.32x = 1,900,898.17
5. Step 5: Solve for x
   x = 1,900,898.17/1,679.32
6. Step 6: Final answer
   x = 1,131.95