Finding the Fourth Proportional to 1,573.63, 2,171.61 and 875.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.63 : 2,171.61 = 875.00 : x
2. Step 2: Convert to fraction form
   1,573.63/2,171.61 = 875.00/x
3. Step 3: Cross multiply
   1,573.63x = 2,171.61 × 875.00
4. Step 4: Simplify right side
   1,573.63x = 1,900,164.18
5. Step 5: Solve for x
   x = 1,900,164.18/1,573.63
6. Step 6: Final answer
   x = 1,207.51