Finding the Fourth Proportional to 1,670.32, 2,505.51 and 981.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670.32 : 2,505.51 = 981.82 : x
2. Step 2: Convert to fraction form
   1,670.32/2,505.51 = 981.82/x
3. Step 3: Cross multiply
   1,670.32x = 2,505.51 × 981.82
4. Step 4: Simplify right side
   1,670.32x = 2,459,959.83
5. Step 5: Solve for x
   x = 2,459,959.83/1,670.32
6. Step 6: Final answer
   x = 1,472.75