Finding the Fourth Proportional to 1,460.19, 2,187.72 and 911.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,460.19 : 2,187.72 = 911.55 : x
2. Step 2: Convert to fraction form
   1,460.19/2,187.72 = 911.55/x
3. Step 3: Cross multiply
   1,460.19x = 2,187.72 × 911.55
4. Step 4: Simplify right side
   1,460.19x = 1,994,216.17
5. Step 5: Solve for x
   x = 1,994,216.17/1,460.19
6. Step 6: Final answer
   x = 1,365.72