Finding the Fourth Proportional to 1,358,978.94, 1,875,238.56 and 815,136.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358,978.94 : 1,875,238.56 = 815,136.84 : x
2. Step 2: Convert to fraction form
   1,358,978.94/1,875,238.56 = 815,136.84/x
3. Step 3: Cross multiply
   1,358,978.94x = 1,875,238.56 × 815,136.84
4. Step 4: Simplify right side
   1,358,978.94x = 1,528,576,034,044.55
5. Step 5: Solve for x
   x = 1,528,576,034,044.55/1,358,978.94
6. Step 6: Final answer
   x = 1,124,797.44