Finding the Fourth Proportional to 1,476.58, 2,212.72 and 745.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,476.58 : 2,212.72 = 745.15 : x
2. Step 2: Convert to fraction form
   1,476.58/2,212.72 = 745.15/x
3. Step 3: Cross multiply
   1,476.58x = 2,212.72 × 745.15
4. Step 4: Simplify right side
   1,476.58x = 1,648,805.06
5. Step 5: Solve for x
   x = 1,648,805.06/1,476.58
6. Step 6: Final answer
   x = 1,116.64