Finding the Fourth Proportional to 1,978.34, 2,971.62 and 1,570.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.34 : 2,971.62 = 1,570.32 : x
2. Step 2: Convert to fraction form
   1,978.34/2,971.62 = 1,570.32/x
3. Step 3: Cross multiply
   1,978.34x = 2,971.62 × 1,570.32
4. Step 4: Simplify right side
   1,978.34x = 4,666,394.32
5. Step 5: Solve for x
   x = 4,666,394.32/1,978.34
6. Step 6: Final answer
   x = 2,358.75