Finding the Fourth Proportional to 1,991.47, 2,973.69 and 1,575.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.47 : 2,973.69 = 1,575.94 : x
2. Step 2: Convert to fraction form
   1,991.47/2,973.69 = 1,575.94/x
3. Step 3: Cross multiply
   1,991.47x = 2,973.69 × 1,575.94
4. Step 4: Simplify right side
   1,991.47x = 4,686,357.02
5. Step 5: Solve for x
   x = 4,686,357.02/1,991.47
6. Step 6: Final answer
   x = 2,353.21