Finding the Fourth Proportional to 1,903.61, 2,856.63 and 1,254.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,903.61 : 2,856.63 = 1,254.80 : x
2. Step 2: Convert to fraction form
   1,903.61/2,856.63 = 1,254.80/x
3. Step 3: Cross multiply
   1,903.61x = 2,856.63 × 1,254.80
4. Step 4: Simplify right side
   1,903.61x = 3,584,499.32
5. Step 5: Solve for x
   x = 3,584,499.32/1,903.61
6. Step 6: Final answer
   x = 1,883.00