Finding the Fourth Proportional to 1,670.91, 2,502.72 and 1,019.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670.91 : 2,502.72 = 1,019.67 : x
2. Step 2: Convert to fraction form
   1,670.91/2,502.72 = 1,019.67/x
3. Step 3: Cross multiply
   1,670.91x = 2,502.72 × 1,019.67
4. Step 4: Simplify right side
   1,670.91x = 2,551,948.50
5. Step 5: Solve for x
   x = 2,551,948.50/1,670.91
6. Step 6: Final answer
   x = 1,527.28