Finding the Fourth Proportional to 2,117,338.84, 3,174,222.72 and 918,358

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,338.84 : 3,174,222.72 = 918,358 : x
2. Step 2: Convert to fraction form
   2,117,338.84/3,174,222.72 = 918,358/x
3. Step 3: Cross multiply
   2,117,338.84x = 3,174,222.72 × 918,358
4. Step 4: Simplify right side
   2,117,338.84x = 2,915,072,828,693.76
5. Step 5: Solve for x
   x = 2,915,072,828,693.76/2,117,338.84
6. Step 6: Final answer
   x = 1,376,762.55