Finding the Fourth Proportional to 1,500.64, 2,070.24 and 976.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.64 : 2,070.24 = 976.72 : x
2. Step 2: Convert to fraction form
   1,500.64/2,070.24 = 976.72/x
3. Step 3: Cross multiply
   1,500.64x = 2,070.24 × 976.72
4. Step 4: Simplify right side
   1,500.64x = 2,022,044.81
5. Step 5: Solve for x
   x = 2,022,044.81/1,500.64
6. Step 6: Final answer
   x = 1,347.45