Finding the Fourth Proportional to 1,105,715.56, 1,525,870.56 and 615,681.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,715.56 : 1,525,870.56 = 615,681.76 : x
2. Step 2: Convert to fraction form
   1,105,715.56/1,525,870.56 = 615,681.76/x
3. Step 3: Cross multiply
   1,105,715.56x = 1,525,870.56 × 615,681.76
4. Step 4: Simplify right side
   1,105,715.56x = 939,450,671,912.99
5. Step 5: Solve for x
   x = 939,450,671,912.99/1,105,715.56
6. Step 6: Final answer
   x = 849,631.41