Finding the Fourth Proportional to 1,872.63, 2,807.46 and 947.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.63 : 2,807.46 = 947.34 : x
2. Step 2: Convert to fraction form
   1,872.63/2,807.46 = 947.34/x
3. Step 3: Cross multiply
   1,872.63x = 2,807.46 × 947.34
4. Step 4: Simplify right side
   1,872.63x = 2,659,619.16
5. Step 5: Solve for x
   x = 2,659,619.16/1,872.63
6. Step 6: Final answer
   x = 1,420.26