Finding the Fourth Proportional to 1,981.52, 2,970.03 and 1,005.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.52 : 2,970.03 = 1,005.56 : x
2. Step 2: Convert to fraction form
   1,981.52/2,970.03 = 1,005.56/x
3. Step 3: Cross multiply
   1,981.52x = 2,970.03 × 1,005.56
4. Step 4: Simplify right side
   1,981.52x = 2,986,543.37
5. Step 5: Solve for x
   x = 2,986,543.37/1,981.52
6. Step 6: Final answer
   x = 1,507.20