Finding the Fourth Proportional to 1,886.31, 2,601.99 and 1,570.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.31 : 2,601.99 = 1,570.01 : x
2. Step 2: Convert to fraction form
   1,886.31/2,601.99 = 1,570.01/x
3. Step 3: Cross multiply
   1,886.31x = 2,601.99 × 1,570.01
4. Step 4: Simplify right side
   1,886.31x = 4,085,137.31
5. Step 5: Solve for x
   x = 4,085,137.31/1,886.31
6. Step 6: Final answer
   x = 2,165.68