Finding the Fourth Proportional to 1,837.28, 2,533.76 and 1,207.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,837.28 : 2,533.76 = 1,207.55 : x
2. Step 2: Convert to fraction form
   1,837.28/2,533.76 = 1,207.55/x
3. Step 3: Cross multiply
   1,837.28x = 2,533.76 × 1,207.55
4. Step 4: Simplify right side
   1,837.28x = 3,059,641.89
5. Step 5: Solve for x
   x = 3,059,641.89/1,837.28
6. Step 6: Final answer
   x = 1,665.31