Finding the Fourth Proportional to 1,875.68, 2,809.20 and 1,052.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.68 : 2,809.20 = 1,052.72 : x
2. Step 2: Convert to fraction form
   1,875.68/2,809.20 = 1,052.72/x
3. Step 3: Cross multiply
   1,875.68x = 2,809.20 × 1,052.72
4. Step 4: Simplify right side
   1,875.68x = 2,957,301.02
5. Step 5: Solve for x
   x = 2,957,301.02/1,875.68
6. Step 6: Final answer
   x = 1,576.66