Finding the Fourth Proportional to 1,886.76, 2,603.78 and 1,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.76 : 2,603.78 = 1,047.50 : x
2. Step 2: Convert to fraction form
   1,886.76/2,603.78 = 1,047.50/x
3. Step 3: Cross multiply
   1,886.76x = 2,603.78 × 1,047.50
4. Step 4: Simplify right side
   1,886.76x = 2,727,459.55
5. Step 5: Solve for x
   x = 2,727,459.55/1,886.76
6. Step 6: Final answer
   x = 1,445.58