Finding the Fourth Proportional to 1,812.68, 2,501.31 and 1,056.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,812.68 : 2,501.31 = 1,056.34 : x
2. Step 2: Convert to fraction form
   1,812.68/2,501.31 = 1,056.34/x
3. Step 3: Cross multiply
   1,812.68x = 2,501.31 × 1,056.34
4. Step 4: Simplify right side
   1,812.68x = 2,642,240.89
5. Step 5: Solve for x
   x = 2,642,240.89/1,812.68
6. Step 6: Final answer
   x = 1,457.64