Finding the Fourth Proportional to 1,678.95, 2,308.73 and 1,457.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.95 : 2,308.73 = 1,457.51 : x
2. Step 2: Convert to fraction form
   1,678.95/2,308.73 = 1,457.51/x
3. Step 3: Cross multiply
   1,678.95x = 2,308.73 × 1,457.51
4. Step 4: Simplify right side
   1,678.95x = 3,364,978.23
5. Step 5: Solve for x
   x = 3,364,978.23/1,678.95
6. Step 6: Final answer
   x = 2,004.22