Finding the Fourth Proportional to 1,457.06, 2,011.56 and 1,009.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.06 : 2,011.56 = 1,009.58 : x
2. Step 2: Convert to fraction form
   1,457.06/2,011.56 = 1,009.58/x
3. Step 3: Cross multiply
   1,457.06x = 2,011.56 × 1,009.58
4. Step 4: Simplify right side
   1,457.06x = 2,030,820.69
5. Step 5: Solve for x
   x = 2,030,820.69/1,457.06
6. Step 6: Final answer
   x = 1,393.78