Finding the Fourth Proportional to 2,100.73, 3,150.99 and 619.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.73 : 3,150.99 = 619.93 : x
2. Step 2: Convert to fraction form
   2,100.73/3,150.99 = 619.93/x
3. Step 3: Cross multiply
   2,100.73x = 3,150.99 × 619.93
4. Step 4: Simplify right side
   2,100.73x = 1,953,393.23
5. Step 5: Solve for x
   x = 1,953,393.23/2,100.73
6. Step 6: Final answer
   x = 929.86