Finding the Fourth Proportional to 1,437.72, 2,151.70 and 1,003

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.72 : 2,151.70 = 1,003 : x
2. Step 2: Convert to fraction form
   1,437.72/2,151.70 = 1,003/x
3. Step 3: Cross multiply
   1,437.72x = 2,151.70 × 1,003
4. Step 4: Simplify right side
   1,437.72x = 2,158,155.10
5. Step 5: Solve for x
   x = 2,158,155.10/1,437.72
6. Step 6: Final answer
   x = 1,501.10