Finding the Fourth Proportional to 1,457.83, 2,012.18 and 898.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.83 : 2,012.18 = 898.76 : x
2. Step 2: Convert to fraction form
   1,457.83/2,012.18 = 898.76/x
3. Step 3: Cross multiply
   1,457.83x = 2,012.18 × 898.76
4. Step 4: Simplify right side
   1,457.83x = 1,808,459.08
5. Step 5: Solve for x
   x = 1,808,459.08/1,457.83
6. Step 6: Final answer
   x = 1,240.52