Finding the Fourth Proportional to 1,861.52, 2,570.74 and 1,491.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.52 : 2,570.74 = 1,491.35 : x
2. Step 2: Convert to fraction form
   1,861.52/2,570.74 = 1,491.35/x
3. Step 3: Cross multiply
   1,861.52x = 2,570.74 × 1,491.35
4. Step 4: Simplify right side
   1,861.52x = 3,833,856.52
5. Step 5: Solve for x
   x = 3,833,856.52/1,861.52
6. Step 6: Final answer
   x = 2,059.54