Finding the Fourth Proportional to 1,564.04, 2,156.42 and 1,003.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.04 : 2,156.42 = 1,003.52 : x
2. Step 2: Convert to fraction form
   1,564.04/2,156.42 = 1,003.52/x
3. Step 3: Cross multiply
   1,564.04x = 2,156.42 × 1,003.52
4. Step 4: Simplify right side
   1,564.04x = 2,164,005.58
5. Step 5: Solve for x
   x = 2,164,005.58/1,564.04
6. Step 6: Final answer
   x = 1,383.60