Finding the Fourth Proportional to 1,563.34, 2,156.86 and 1,003.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.34 : 2,156.86 = 1,003.76 : x
2. Step 2: Convert to fraction form
   1,563.34/2,156.86 = 1,003.76/x
3. Step 3: Cross multiply
   1,563.34x = 2,156.86 × 1,003.76
4. Step 4: Simplify right side
   1,563.34x = 2,164,969.79
5. Step 5: Solve for x
   x = 2,164,969.79/1,563.34
6. Step 6: Final answer
   x = 1,384.84