Finding the Fourth Proportional to 1,870.32, 2,801.92 and 1,564.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.32 : 2,801.92 = 1,564.12 : x
2. Step 2: Convert to fraction form
   1,870.32/2,801.92 = 1,564.12/x
3. Step 3: Cross multiply
   1,870.32x = 2,801.92 × 1,564.12
4. Step 4: Simplify right side
   1,870.32x = 4,382,539.11
5. Step 5: Solve for x
   x = 4,382,539.11/1,870.32
6. Step 6: Final answer
   x = 2,343.20