Finding the Fourth Proportional to 1,979.00, 2,970.34 and 1,005.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.00 : 2,970.34 = 1,005.78 : x
2. Step 2: Convert to fraction form
   1,979.00/2,970.34 = 1,005.78/x
3. Step 3: Cross multiply
   1,979.00x = 2,970.34 × 1,005.78
4. Step 4: Simplify right side
   1,979.00x = 2,987,517.19
5. Step 5: Solve for x
   x = 2,987,517.19/1,979.00
6. Step 6: Final answer
   x = 1,509.61