Finding the Fourth Proportional to 1,501.94, 2,073.20 and 1,005.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.94 : 2,073.20 = 1,005.31 : x
2. Step 2: Convert to fraction form
   1,501.94/2,073.20 = 1,005.31/x
3. Step 3: Cross multiply
   1,501.94x = 2,073.20 × 1,005.31
4. Step 4: Simplify right side
   1,501.94x = 2,084,206.26
5. Step 5: Solve for x
   x = 2,084,206.26/1,501.94
6. Step 6: Final answer
   x = 1,387.67