Finding the Fourth Proportional to 1,470.76, 2,030.60 and 947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,470.76 : 2,030.60 = 947.72 : x
2. Step 2: Convert to fraction form
   1,470.76/2,030.60 = 947.72/x
3. Step 3: Cross multiply
   1,470.76x = 2,030.60 × 947.72
4. Step 4: Simplify right side
   1,470.76x = 1,924,440.23
5. Step 5: Solve for x
   x = 1,924,440.23/1,470.76
6. Step 6: Final answer
   x = 1,308.47