Finding the Fourth Proportional to 1,409.55, 2,111.90 and 976.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.55 : 2,111.90 = 976.20 : x
2. Step 2: Convert to fraction form
   1,409.55/2,111.90 = 976.20/x
3. Step 3: Cross multiply
   1,409.55x = 2,111.90 × 976.20
4. Step 4: Simplify right side
   1,409.55x = 2,061,631.90
5. Step 5: Solve for x
   x = 2,061,631.90/1,409.55
6. Step 6: Final answer
   x = 1,462.62