Finding the Fourth Proportional to 1,979.94, 2,970.72 and 1,056.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.94 : 2,970.72 = 1,056.54 : x
2. Step 2: Convert to fraction form
   1,979.94/2,970.72 = 1,056.54/x
3. Step 3: Cross multiply
   1,979.94x = 2,970.72 × 1,056.54
4. Step 4: Simplify right side
   1,979.94x = 3,138,684.51
5. Step 5: Solve for x
   x = 3,138,684.51/1,979.94
6. Step 6: Final answer
   x = 1,585.24