Finding the Fourth Proportional to 830,002.84, 1,142,991.93 and 721,057.45

Step by Step Solution

1. Step 1: Write the proportion equation
   830,002.84 : 1,142,991.93 = 721,057.45 : x
2. Step 2: Convert to fraction form
   830,002.84/1,142,991.93 = 721,057.45/x
3. Step 3: Cross multiply
   830,002.84x = 1,142,991.93 × 721,057.45
4. Step 4: Simplify right side
   830,002.84x = 824,162,846,416.38
5. Step 5: Solve for x
   x = 824,162,846,416.38/830,002.84
6. Step 6: Final answer
   x = 992,963.89