Finding the Fourth Proportional to 1,320.02, 1,980.56 and 498.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.02 : 1,980.56 = 498.53 : x
2. Step 2: Convert to fraction form
   1,320.02/1,980.56 = 498.53/x
3. Step 3: Cross multiply
   1,320.02x = 1,980.56 × 498.53
4. Step 4: Simplify right side
   1,320.02x = 987,374.77
5. Step 5: Solve for x
   x = 987,374.77/1,320.02
6. Step 6: Final answer
   x = 748.00