Finding the Fourth Proportional to 1,506.61, 2,259.42 and 921.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,506.61 : 2,259.42 = 921.52 : x
2. Step 2: Convert to fraction form
   1,506.61/2,259.42 = 921.52/x
3. Step 3: Cross multiply
   1,506.61x = 2,259.42 × 921.52
4. Step 4: Simplify right side
   1,506.61x = 2,082,100.72
5. Step 5: Solve for x
   x = 2,082,100.72/1,506.61
6. Step 6: Final answer
   x = 1,381.98